diff --git a/BUILD b/BUILD
index 5fea669..be6dd76 100644
--- a/BUILD
+++ b/BUILD
@@ -1,12 +1,5 @@
 package(default_visibility = ["//visibility:public"])
 
-config_setting(
-    name = "jdk9",
-    values = {
-        "java_toolchain": "@bazel_tools//tools/jdk:toolchain_jdk9",
-    },
-)
-
 genrule(
     name = "all",
     testonly = 1,
diff --git a/WORKSPACE b/WORKSPACE
index 93c34b5..40fe8b2 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -138,22 +138,22 @@
 
 maven_jar(
     name = "mockito",
-    artifact = "org.mockito:mockito-core:2.13.0",
-    sha1 = "8e372943974e4a121fb8617baced8ebfe46d54f0",
+    artifact = "org.mockito:mockito-core:2.23.0",
+    sha1 = "497ddb32fd5d01f9dbe99a2ec790aeb931dff1b1",
 )
 
-BYTE_BUDDY_VERSION = "1.7.9"
+BYTE_BUDDY_VERSION = "1.9.0"
 
 maven_jar(
     name = "byte_buddy",
     artifact = "net.bytebuddy:byte-buddy:" + BYTE_BUDDY_VERSION,
-    sha1 = "51218a01a882c04d0aba8c028179cce488bbcb58",
+    sha1 = "8cb0d5baae526c9df46ae17693bbba302640538b",
 )
 
 maven_jar(
     name = "byte_buddy_agent",
     artifact = "net.bytebuddy:byte-buddy-agent:" + BYTE_BUDDY_VERSION,
-    sha1 = "a6c65f9da7f467ee1f02ff2841ffd3155aee2fc9",
+    sha1 = "37b5703b4a6290be3fffc63ae9c6bcaaee0ff856",
 )
 
 maven_jar(
diff --git a/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF
index 9e38b43..6603455 100644
--- a/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.ant.test/META-INF/MANIFEST.MF
@@ -1,16 +1,17 @@
 Bundle-Localization: plugin
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.ant.test
 Bundle-SymbolicName: org.eclipse.jgit.ant.test
-Bundle-Version: 5.4.1.qualifier
+Bundle-Vendor: %Bundle-Vendor
+Bundle-Version: 5.5.0.qualifier
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: org.apache.tools.ant,
- org.eclipse.jgit.ant.tasks;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.ant.tasks;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.hamcrest.core;version="[1.1.0,2.0.0)",
  org.junit;version="[4.12,5.0.0)"
diff --git a/org.eclipse.jgit.ant.test/plugin.properties b/org.eclipse.jgit.ant.test/plugin.properties
index 4f849eb..412f392 100644
--- a/org.eclipse.jgit.ant.test/plugin.properties
+++ b/org.eclipse.jgit.ant.test/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Ant Tasks Tests
-provider_name=Eclipse JGit
+Bundle-Name=JGit Ant Tasks Tests
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.ant.test/pom.xml b/org.eclipse.jgit.ant.test/pom.xml
index 8e8208f..873f3a7 100644
--- a/org.eclipse.jgit.ant.test/pom.xml
+++ b/org.eclipse.jgit.ant.test/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.ant.test</artifactId>
diff --git a/org.eclipse.jgit.ant/META-INF/MANIFEST.MF b/org.eclipse.jgit.ant/META-INF/MANIFEST.MF
index 15359e7..41a0422 100644
--- a/org.eclipse.jgit.ant/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.ant/META-INF/MANIFEST.MF
@@ -3,13 +3,13 @@
 Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.ant
 Bundle-SymbolicName: org.eclipse.jgit.ant
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: org.apache.tools.ant,
-  org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)"
+  org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)"
 Bundle-Localization: plugin
-Bundle-Vendor: %Provider-Name
-Export-Package: org.eclipse.jgit.ant;version="5.4.1",
- org.eclipse.jgit.ant.tasks;version="5.4.1";
+Bundle-Vendor: %Bundle-Vendor
+Export-Package: org.eclipse.jgit.ant;version="5.5.0",
+ org.eclipse.jgit.ant.tasks;version="5.5.0";
   uses:="org.apache.tools.ant,
    org.apache.tools.ant.types"
diff --git a/org.eclipse.jgit.ant/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.ant/META-INF/SOURCE-MANIFEST.MF
index 8e62fb4..708d297 100644
--- a/org.eclipse.jgit.ant/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.ant/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.ant - Sources
 Bundle-SymbolicName: org.eclipse.jgit.ant.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.ant;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.ant;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.ant/plugin.properties b/org.eclipse.jgit.ant/plugin.properties
index 47725bc..7c9e5f0 100644
--- a/org.eclipse.jgit.ant/plugin.properties
+++ b/org.eclipse.jgit.ant/plugin.properties
@@ -1,3 +1,3 @@
 #Properties file for org.eclipse.jgit.ant
 Bundle-Name = JGit Ant Tasks
-Provider-Name = Eclipse JGit
\ No newline at end of file
+Bundle-Vendor = Eclipse JGit
\ No newline at end of file
diff --git a/org.eclipse.jgit.ant/pom.xml b/org.eclipse.jgit.ant/pom.xml
index c7fb95a..e97d18d 100644
--- a/org.eclipse.jgit.ant/pom.xml
+++ b/org.eclipse.jgit.ant/pom.xml
@@ -48,7 +48,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.ant</artifactId>
diff --git a/org.eclipse.jgit.archive/META-INF/MANIFEST.MF b/org.eclipse.jgit.archive/META-INF/MANIFEST.MF
index 0eb38eb..965c798 100644
--- a/org.eclipse.jgit.archive/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.archive/META-INF/MANIFEST.MF
@@ -1,10 +1,10 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.archive
 Bundle-SymbolicName: org.eclipse.jgit.archive
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %provider_name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: org.apache.commons.compress.archivers;version="[1.4,2.0)",
@@ -13,17 +13,17 @@
  org.apache.commons.compress.compressors.bzip2;version="[1.4,2.0)",
  org.apache.commons.compress.compressors.gzip;version="[1.4,2.0)",
  org.apache.commons.compress.compressors.xz;version="[1.4,2.0)",
- org.eclipse.jgit.api;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.api;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.osgi.framework;version="[1.3.0,2.0.0)"
 Bundle-ActivationPolicy: lazy
 Bundle-Activator: org.eclipse.jgit.archive.FormatActivator
-Export-Package: org.eclipse.jgit.archive;version="5.4.1";
+Export-Package: org.eclipse.jgit.archive;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.api,
    org.apache.commons.compress.archivers,
    org.osgi.framework",
- org.eclipse.jgit.archive.internal;version="5.4.1";x-internal:=true
+ org.eclipse.jgit.archive.internal;version="5.5.0";x-internal:=true
diff --git a/org.eclipse.jgit.archive/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.archive/META-INF/SOURCE-MANIFEST.MF
index 30928f8..be1bc5d 100644
--- a/org.eclipse.jgit.archive/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.archive/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.archive - Sources
 Bundle-SymbolicName: org.eclipse.jgit.archive.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.archive;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.archive;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.archive/plugin.properties b/org.eclipse.jgit.archive/plugin.properties
index f4269b7..fe22ce8 100644
--- a/org.eclipse.jgit.archive/plugin.properties
+++ b/org.eclipse.jgit.archive/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Archive Formats
-provider_name=Eclipse JGit
+Bundle-Name=JGit Archive Formats
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.archive/pom.xml b/org.eclipse.jgit.archive/pom.xml
index a3f9520..bc80fa7 100644
--- a/org.eclipse.jgit.archive/pom.xml
+++ b/org.eclipse.jgit.archive/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.archive</artifactId>
diff --git a/org.eclipse.jgit.coverage/pom.xml b/org.eclipse.jgit.coverage/pom.xml
index 12c7552..2134c7f 100644
--- a/org.eclipse.jgit.coverage/pom.xml
+++ b/org.eclipse.jgit.coverage/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
   <modelVersion>4.0.0</modelVersion>
 
@@ -18,88 +18,88 @@
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.ant</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.archive</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.http.apache</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.http.server</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.lfs</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.lfs.server</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.pgm</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.ui</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.ssh.apache</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
 
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.test</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.ant.test</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.http.test</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.pgm.test</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.lfs.test</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.lfs.server.test</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>org.eclipse.jgit</groupId>
       <artifactId>org.eclipse.jgit.ssh.apache.test</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
   </dependencies>
 
diff --git a/org.eclipse.jgit.http.apache/META-INF/MANIFEST.MF b/org.eclipse.jgit.http.apache/META-INF/MANIFEST.MF
index 8206e8a..5c95636 100644
--- a/org.eclipse.jgit.http.apache/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.http.apache/META-INF/MANIFEST.MF
@@ -3,10 +3,10 @@
 Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.http.apache
 Bundle-SymbolicName: org.eclipse.jgit.http.apache
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Bundle-Localization: plugin
-Bundle-Vendor: %Provider-Name
+Bundle-Vendor: %Bundle-Vendor
 Bundle-ActivationPolicy: lazy
 Import-Package: org.apache.http;version="[4.3.0,5.0.0)",
  org.apache.http.client;version="[4.3.0,5.0.0)",
@@ -23,11 +23,11 @@
  org.apache.http.impl.client;version="[4.3.0,5.0.0)",
  org.apache.http.impl.conn;version="[4.3.0,5.0.0)",
  org.apache.http.params;version="[4.3.0,5.0.0)",
- org.eclipse.jgit.annotations;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)"
-Export-Package: org.eclipse.jgit.transport.http.apache;version="5.4.1";
+ org.eclipse.jgit.annotations;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)"
+Export-Package: org.eclipse.jgit.transport.http.apache;version="5.5.0";
   uses:="org.apache.http.client,
    org.eclipse.jgit.transport.http,
    org.apache.http.entity,
diff --git a/org.eclipse.jgit.http.apache/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.http.apache/META-INF/SOURCE-MANIFEST.MF
index 5aeb331..ad279f8 100644
--- a/org.eclipse.jgit.http.apache/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.http.apache/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.http.apache - Sources
 Bundle-SymbolicName: org.eclipse.jgit.http.apache.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.http.apache;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.http.apache;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.http.apache/plugin.properties b/org.eclipse.jgit.http.apache/plugin.properties
index f87497a..e242829 100644
--- a/org.eclipse.jgit.http.apache/plugin.properties
+++ b/org.eclipse.jgit.http.apache/plugin.properties
@@ -1,3 +1,3 @@
 #Properties file for org.eclipse.jgit.http.apache
 Bundle-Name = JGit Apache httpclient based HTTP support
-Provider-Name = Eclipse JGit
\ No newline at end of file
+Bundle-Vendor = Eclipse JGit
\ No newline at end of file
diff --git a/org.eclipse.jgit.http.apache/pom.xml b/org.eclipse.jgit.http.apache/pom.xml
index d2665c0..69ab575 100644
--- a/org.eclipse.jgit.http.apache/pom.xml
+++ b/org.eclipse.jgit.http.apache/pom.xml
@@ -48,7 +48,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.http.apache</artifactId>
diff --git a/org.eclipse.jgit.http.server/META-INF/MANIFEST.MF b/org.eclipse.jgit.http.server/META-INF/MANIFEST.MF
index a231f58..0a7fa84 100644
--- a/org.eclipse.jgit.http.server/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.http.server/META-INF/MANIFEST.MF
@@ -1,15 +1,15 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.http.server
 Bundle-SymbolicName: org.eclipse.jgit.http.server
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
-Export-Package: org.eclipse.jgit.http.server;version="5.4.1",
- org.eclipse.jgit.http.server.glue;version="5.4.1";
+Bundle-Vendor: %Bundle-Vendor
+Export-Package: org.eclipse.jgit.http.server;version="5.5.0",
+ org.eclipse.jgit.http.server.glue;version="5.5.0";
   uses:="javax.servlet,javax.servlet.http",
- org.eclipse.jgit.http.server.resolver;version="5.4.1";
+ org.eclipse.jgit.http.server.resolver;version="5.5.0";
   uses:="org.eclipse.jgit.transport.resolver,
    org.eclipse.jgit.lib,
    org.eclipse.jgit.transport,
@@ -18,13 +18,13 @@
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: javax.servlet;version="[2.5.0,3.2.0)",
  javax.servlet.http;version="[2.5.0,3.2.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.dfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.transport.parser;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.resolver;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)"
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.dfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.transport.parser;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.resolver;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)"
diff --git a/org.eclipse.jgit.http.server/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.http.server/META-INF/SOURCE-MANIFEST.MF
index 3a06552..0fbcd98 100644
--- a/org.eclipse.jgit.http.server/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.http.server/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.http.server - Sources
 Bundle-SymbolicName: org.eclipse.jgit.http.server.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.http.server;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.http.server;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.http.server/plugin.properties b/org.eclipse.jgit.http.server/plugin.properties
index d891b50..bcec310 100644
--- a/org.eclipse.jgit.http.server/plugin.properties
+++ b/org.eclipse.jgit.http.server/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit HTTP Server
-provider_name=Eclipse JGit
+Bundle-Name=JGit HTTP Server
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.http.server/pom.xml b/org.eclipse.jgit.http.server/pom.xml
index f795038..4ccdb91 100644
--- a/org.eclipse.jgit.http.server/pom.xml
+++ b/org.eclipse.jgit.http.server/pom.xml
@@ -52,7 +52,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.http.server</artifactId>
diff --git a/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitFilter.java b/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitFilter.java
index 51de8ab..1c5e7ec 100644
--- a/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitFilter.java
+++ b/org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/GitFilter.java
@@ -248,13 +248,13 @@
 					.through(enabled)//
 					.with(new TextFileServlet(Constants.HEAD));
 
-			final String info_alternates = "objects/info/alternates";
+			final String info_alternates = Constants.OBJECTS + "/" + Constants.INFO_ALTERNATES;
 			serve("*/" + info_alternates)//
 					.through(mustBeLocal)//
 					.through(enabled)//
 					.with(new TextFileServlet(info_alternates));
 
-			final String http_alternates = "objects/info/http-alternates";
+			final String http_alternates = Constants.OBJECTS + "/" + Constants.INFO_HTTP_ALTERNATES;
 			serve("*/" + http_alternates)//
 					.through(mustBeLocal)//
 					.through(enabled)//
diff --git a/org.eclipse.jgit.http.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.http.test/META-INF/MANIFEST.MF
index 4d4b3e4..a3afc0d 100644
--- a/org.eclipse.jgit.http.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.http.test/META-INF/MANIFEST.MF
@@ -1,10 +1,10 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.http.test
 Bundle-SymbolicName: org.eclipse.jgit.http.test
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %provider_name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: javax.servlet;version="[2.5.0,3.2.0)",
@@ -28,25 +28,25 @@
  org.eclipse.jetty.util.log;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.security;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.thread;version="[9.4.5,10.0.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.http.server;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.http.server.glue;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.http.server.resolver;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.dfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.reftable;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http.apache;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.resolver;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.http.server;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.http.server.glue;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.http.server.resolver;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.dfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.reftable;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http.apache;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.resolver;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.hamcrest;version="[1.1.0,2.0.0)",
  org.hamcrest.core;version="[1.1.0,2.0.0)",
  org.junit;version="[4.12,5.0.0)",
diff --git a/org.eclipse.jgit.http.test/plugin.properties b/org.eclipse.jgit.http.test/plugin.properties
index 0a620aa..d574f0d 100644
--- a/org.eclipse.jgit.http.test/plugin.properties
+++ b/org.eclipse.jgit.http.test/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit HTTP Tests
-provider_name=Eclipse JGit
+Bundle-Name=JGit HTTP Tests
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.http.test/pom.xml b/org.eclipse.jgit.http.test/pom.xml
index df99448..020039d 100644
--- a/org.eclipse.jgit.http.test/pom.xml
+++ b/org.eclipse.jgit.http.test/pom.xml
@@ -51,7 +51,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.http.test</artifactId>
diff --git a/org.eclipse.jgit.junit.http/META-INF/MANIFEST.MF b/org.eclipse.jgit.junit.http/META-INF/MANIFEST.MF
index ba38a8b..2d97d26 100644
--- a/org.eclipse.jgit.junit.http/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.junit.http/META-INF/MANIFEST.MF
@@ -1,11 +1,11 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.junit.http
 Bundle-SymbolicName: org.eclipse.jgit.junit.http
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
+Bundle-Vendor: %Bundle-Vendor
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: javax.servlet;version="[2.5.0,3.2.0)",
@@ -22,16 +22,16 @@
  org.eclipse.jetty.util.log;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.security;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.ssl;version="[9.4.5,10.0.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.http.server;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.resolver;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.http.server;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.resolver;version="[5.5.0,5.6.0)",
  org.junit;version="[4.12,5.0.0)"
-Export-Package: org.eclipse.jgit.junit.http;version="5.4.1";
+Export-Package: org.eclipse.jgit.junit.http;version="5.5.0";
   uses:="org.eclipse.jgit.transport,
    org.eclipse.jgit.junit,
    javax.servlet.http,
diff --git a/org.eclipse.jgit.junit.http/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.junit.http/META-INF/SOURCE-MANIFEST.MF
index 0243f2f..1bf4a31 100644
--- a/org.eclipse.jgit.junit.http/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.junit.http/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.junit.http - Sources
 Bundle-SymbolicName: org.eclipse.jgit.junit.http.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.junit.http;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.junit.http;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.junit.http/plugin.properties b/org.eclipse.jgit.junit.http/plugin.properties
index 7a96b09..2ec05e1 100644
--- a/org.eclipse.jgit.junit.http/plugin.properties
+++ b/org.eclipse.jgit.junit.http/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit JUnit Http Utility Classes
-provider_name=Eclipse JGit
+Bundle-Name=JGit JUnit Http Utility Classes
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.junit.http/pom.xml b/org.eclipse.jgit.junit.http/pom.xml
index 9bf2a21..7cdae3a 100644
--- a/org.eclipse.jgit.junit.http/pom.xml
+++ b/org.eclipse.jgit.junit.http/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.junit.http</artifactId>
diff --git a/org.eclipse.jgit.junit.ssh/META-INF/MANIFEST.MF b/org.eclipse.jgit.junit.ssh/META-INF/MANIFEST.MF
index 6b443f3..67e8c63 100644
--- a/org.eclipse.jgit.junit.ssh/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.junit.ssh/META-INF/MANIFEST.MF
@@ -1,11 +1,11 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.junit.ssh
 Bundle-SymbolicName: org.eclipse.jgit.junit.ssh
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
+Bundle-Vendor: %Bundle-Vendor
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: org.apache.sshd.common;version="[2.2.0,2.3.0)",
@@ -30,8 +30,8 @@
  org.apache.sshd.server.shell;version="[2.2.0,2.3.0)",
  org.apache.sshd.server.subsystem;version="[2.2.0,2.3.0)",
  org.apache.sshd.server.subsystem.sftp;version="[2.2.0,2.3.0)",
- org.eclipse.jgit.annotations;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.annotations;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
  org.slf4j;version="[1.7.0,2.0.0)"
-Export-Package: org.eclipse.jgit.junit.ssh;version="5.4.1"
+Export-Package: org.eclipse.jgit.junit.ssh;version="5.5.0"
diff --git a/org.eclipse.jgit.junit.ssh/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.junit.ssh/META-INF/SOURCE-MANIFEST.MF
index 62fb41b..1890ab5 100644
--- a/org.eclipse.jgit.junit.ssh/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.junit.ssh/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.junit.ssh - Sources
 Bundle-SymbolicName: org.eclipse.jgit.junit.ssh.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.junit.ssh;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.junit.ssh;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.junit.ssh/plugin.properties b/org.eclipse.jgit.junit.ssh/plugin.properties
index 5689b94..3af91ed 100644
--- a/org.eclipse.jgit.junit.ssh/plugin.properties
+++ b/org.eclipse.jgit.junit.ssh/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit JUnit Ssh Utility Classes
-provider_name=Eclipse JGit
+Bundle-Name=JGit JUnit Ssh Utility Classes
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.junit.ssh/pom.xml b/org.eclipse.jgit.junit.ssh/pom.xml
index 92fd161..50e666c 100644
--- a/org.eclipse.jgit.junit.ssh/pom.xml
+++ b/org.eclipse.jgit.junit.ssh/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.junit.ssh</artifactId>
diff --git a/org.eclipse.jgit.junit.ssh/src/org/eclipse/jgit/junit/ssh/SshTestGitServer.java b/org.eclipse.jgit.junit.ssh/src/org/eclipse/jgit/junit/ssh/SshTestGitServer.java
index 25d952f..f54c279 100644
--- a/org.eclipse.jgit.junit.ssh/src/org/eclipse/jgit/junit/ssh/SshTestGitServer.java
+++ b/org.eclipse.jgit.junit.ssh/src/org/eclipse/jgit/junit/ssh/SshTestGitServer.java
@@ -58,6 +58,7 @@
 
 import org.apache.sshd.common.NamedFactory;
 import org.apache.sshd.common.NamedResource;
+import org.apache.sshd.common.PropertyResolverUtils;
 import org.apache.sshd.common.SshConstants;
 import org.apache.sshd.common.config.keys.AuthorizedKeyEntry;
 import org.apache.sshd.common.config.keys.KeyUtils;
@@ -69,6 +70,7 @@
 import org.apache.sshd.common.util.threads.CloseableExecutorService;
 import org.apache.sshd.common.util.threads.ThreadUtils;
 import org.apache.sshd.server.ServerAuthenticationManager;
+import org.apache.sshd.server.ServerFactoryManager;
 import org.apache.sshd.server.SshServer;
 import org.apache.sshd.server.auth.UserAuth;
 import org.apache.sshd.server.auth.gss.GSSAuthenticator;
@@ -336,12 +338,38 @@
 		server.stop(true);
 	}
 
+	/**
+	 * Sets the test user's public key on the server.
+	 *
+	 * @param key
+	 *            to set
+	 * @throws IOException
+	 *             if the file cannot be read
+	 * @throws GeneralSecurityException
+	 *             if the public key cannot be extracted from the file
+	 */
 	public void setTestUserPublicKey(Path key)
 			throws IOException, GeneralSecurityException {
 		this.testKey = AuthorizedKeyEntry.readAuthorizedKeys(key).get(0)
 				.resolvePublicKey(null, PublicKeyEntryResolver.IGNORING);
 	}
 
+	/**
+	 * Sets the lines the server sends before its server identification in the
+	 * initial protocol version exchange.
+	 *
+	 * @param lines
+	 *            to send
+	 * @since 5.5
+	 */
+	public void setPreamble(String... lines) {
+		if (lines != null && lines.length > 0) {
+			PropertyResolverUtils.updateProperty(this.server,
+					ServerFactoryManager.SERVER_EXTRA_IDENTIFICATION_LINES,
+					String.join("|", lines));
+		}
+	}
+
 	private class GitUploadPackCommand extends AbstractCommandSupport {
 
 		protected GitUploadPackCommand(String command,
diff --git a/org.eclipse.jgit.junit/META-INF/MANIFEST.MF b/org.eclipse.jgit.junit/META-INF/MANIFEST.MF
index 637fad0..e63a8c4 100644
--- a/org.eclipse.jgit.junit/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.junit/META-INF/MANIFEST.MF
@@ -1,36 +1,36 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.junit
 Bundle-SymbolicName: org.eclipse.jgit.junit
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
+Bundle-Vendor: %Bundle-Vendor
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Import-Package: org.eclipse.jgit.annotations;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.api;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.api.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.dircache;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.pack;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.merge;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="5.4.1",
- org.eclipse.jgit.treewalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util.io;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util.time;version="[5.4.1,5.5.0)",
+Import-Package: org.eclipse.jgit.annotations;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.api;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.api.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.dircache;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.pack;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.merge;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="5.5.0",
+ org.eclipse.jgit.treewalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util.io;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util.time;version="[5.5.0,5.6.0)",
  org.junit;version="[4.12,5.0.0)",
  org.junit.rules;version="[4.12,5.0.0)",
  org.junit.runner;version="[4.12,5.0.0)",
  org.junit.runners.model;version="[4.12,5.0.0)",
  org.slf4j;version="[1.7.0,2.0.0)"
-Export-Package: org.eclipse.jgit.junit;version="5.4.1";
+Export-Package: org.eclipse.jgit.junit;version="5.5.0";
   uses:="org.eclipse.jgit.dircache,
    org.eclipse.jgit.lib,
    org.eclipse.jgit.revwalk,
@@ -43,4 +43,4 @@
    org.junit.runners.model,
    org.junit.runner,
    org.eclipse.jgit.util.time",
- org.eclipse.jgit.junit.time;version="5.4.1";uses:="org.eclipse.jgit.util.time"
+ org.eclipse.jgit.junit.time;version="5.5.0";uses:="org.eclipse.jgit.util.time"
diff --git a/org.eclipse.jgit.junit/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.junit/META-INF/SOURCE-MANIFEST.MF
index f244ece..ff15a73 100644
--- a/org.eclipse.jgit.junit/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.junit/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.junit - Sources
 Bundle-SymbolicName: org.eclipse.jgit.junit.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.junit;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.junit;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.junit/plugin.properties b/org.eclipse.jgit.junit/plugin.properties
index 9842967..f40f8e1 100644
--- a/org.eclipse.jgit.junit/plugin.properties
+++ b/org.eclipse.jgit.junit/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit JUnit Utility Classes
-provider_name=Eclipse JGit
+Bundle-Name=JGit JUnit Utility Classes
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.junit/pom.xml b/org.eclipse.jgit.junit/pom.xml
index 392fd51..ed0a82c 100644
--- a/org.eclipse.jgit.junit/pom.xml
+++ b/org.eclipse.jgit.junit/pom.xml
@@ -52,7 +52,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.junit</artifactId>
diff --git a/org.eclipse.jgit.lfs.server.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.lfs.server.test/META-INF/MANIFEST.MF
index d5bf494..237b732 100644
--- a/org.eclipse.jgit.lfs.server.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.lfs.server.test/META-INF/MANIFEST.MF
@@ -1,10 +1,10 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.lfs.server.test
 Bundle-SymbolicName: org.eclipse.jgit.lfs.server.test
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %provider_name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: javax.servlet;version="[3.1.0,4.0.0)",
@@ -28,24 +28,24 @@
  org.eclipse.jetty.util.log;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.security;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.thread;version="[9.4.5,10.0.0)",
- org.eclipse.jgit.api;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.api.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.server;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.server.fs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.test;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.api;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.api.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.server;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.server.fs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.test;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.hamcrest.core;version="[1.1.0,2.0.0)",
  org.junit;version="[4.12,5.0.0)",
  org.junit.rules;version="[4.12,5.0.0)",
diff --git a/org.eclipse.jgit.lfs.server.test/plugin.properties b/org.eclipse.jgit.lfs.server.test/plugin.properties
index 4a8e642..b6dd7c0 100644
--- a/org.eclipse.jgit.lfs.server.test/plugin.properties
+++ b/org.eclipse.jgit.lfs.server.test/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit LFS Server Tests
-provider_name=Eclipse JGit
+Bundle-Name=JGit LFS Server Tests
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.lfs.server.test/pom.xml b/org.eclipse.jgit.lfs.server.test/pom.xml
index 7194449..d6075fe 100644
--- a/org.eclipse.jgit.lfs.server.test/pom.xml
+++ b/org.eclipse.jgit.lfs.server.test/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.lfs.server.test</artifactId>
diff --git a/org.eclipse.jgit.lfs.server/META-INF/MANIFEST.MF b/org.eclipse.jgit.lfs.server/META-INF/MANIFEST.MF
index ab14a16..e130a8d 100644
--- a/org.eclipse.jgit.lfs.server/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.lfs.server/META-INF/MANIFEST.MF
@@ -1,21 +1,21 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.lfs.server
 Bundle-SymbolicName: org.eclipse.jgit.lfs.server
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
-Export-Package: org.eclipse.jgit.lfs.server;version="5.4.1";
+Bundle-Vendor: %Bundle-Vendor
+Export-Package: org.eclipse.jgit.lfs.server;version="5.5.0";
   uses:="javax.servlet.http,
    org.eclipse.jgit.lfs.lib",
- org.eclipse.jgit.lfs.server.fs;version="5.4.1";
+ org.eclipse.jgit.lfs.server.fs;version="5.5.0";
   uses:="javax.servlet,
    javax.servlet.http,
    org.eclipse.jgit.lfs.server,
    org.eclipse.jgit.lfs.lib",
- org.eclipse.jgit.lfs.server.internal;version="5.4.1";x-internal:=true,
- org.eclipse.jgit.lfs.server.s3;version="5.4.1";
+ org.eclipse.jgit.lfs.server.internal;version="5.5.0";x-internal:=true,
+ org.eclipse.jgit.lfs.server.s3;version="5.5.0";
   uses:="org.eclipse.jgit.lfs.server,
    org.eclipse.jgit.lfs.lib"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
@@ -25,15 +25,15 @@
  javax.servlet.http;version="[3.1.0,4.0.0)",
  org.apache.http;version="[4.3.0,5.0.0)",
  org.apache.http.client;version="[4.3.0,5.0.0)",
- org.eclipse.jgit.annotations;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.internal;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http.apache;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.annotations;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.internal;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http.apache;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.slf4j;version="[1.7.0,2.0.0)"
diff --git a/org.eclipse.jgit.lfs.server/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.lfs.server/META-INF/SOURCE-MANIFEST.MF
index abf1dd2..916329a 100644
--- a/org.eclipse.jgit.lfs.server/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.lfs.server/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.lfs.server - Sources
 Bundle-SymbolicName: org.eclipse.jgit.lfs.server.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.lfs.server;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.lfs.server;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.lfs.server/plugin.properties b/org.eclipse.jgit.lfs.server/plugin.properties
index 59f0139..4b9ee82 100644
--- a/org.eclipse.jgit.lfs.server/plugin.properties
+++ b/org.eclipse.jgit.lfs.server/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Large File Storage Server
-provider_name=Eclipse JGit
+Bundle-Name=JGit Large File Storage Server
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.lfs.server/pom.xml b/org.eclipse.jgit.lfs.server/pom.xml
index 8a954bb..a00d2b9 100644
--- a/org.eclipse.jgit.lfs.server/pom.xml
+++ b/org.eclipse.jgit.lfs.server/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.lfs.server</artifactId>
diff --git a/org.eclipse.jgit.lfs.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.lfs.test/META-INF/MANIFEST.MF
index a4f55a6..c8b48d6 100644
--- a/org.eclipse.jgit.lfs.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.lfs.test/META-INF/MANIFEST.MF
@@ -1,24 +1,24 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.lfs.test
 Bundle-SymbolicName: org.eclipse.jgit.lfs.test
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %provider_name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Import-Package: org.eclipse.jgit.internal.storage.dfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+Import-Package: org.eclipse.jgit.internal.storage.dfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.hamcrest.core;version="[1.1.0,2.0.0)",
  org.junit;version="[4.12,5.0.0)",
  org.junit.runner;version="[4.12,5.0.0)",
  org.junit.runners;version="[4.12,5.0.0)"
-Export-Package: org.eclipse.jgit.lfs.test;version="5.4.1";x-friends:="org.eclipse.jgit.lfs.server.test"
+Export-Package: org.eclipse.jgit.lfs.test;version="5.5.0";x-friends:="org.eclipse.jgit.lfs.server.test"
diff --git a/org.eclipse.jgit.lfs.test/plugin.properties b/org.eclipse.jgit.lfs.test/plugin.properties
index f900780..ab78575 100644
--- a/org.eclipse.jgit.lfs.test/plugin.properties
+++ b/org.eclipse.jgit.lfs.test/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit LFS Tests
-provider_name=Eclipse JGit
+Bundle-Name=JGit LFS Tests
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.lfs.test/pom.xml b/org.eclipse.jgit.lfs.test/pom.xml
index ee74f0e..ea1b6d5 100644
--- a/org.eclipse.jgit.lfs.test/pom.xml
+++ b/org.eclipse.jgit.lfs.test/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.lfs.test</artifactId>
diff --git a/org.eclipse.jgit.lfs/.settings/.api_filters b/org.eclipse.jgit.lfs/.settings/.api_filters
index 5b8ece6..9747df8 100644
--- a/org.eclipse.jgit.lfs/.settings/.api_filters
+++ b/org.eclipse.jgit.lfs/.settings/.api_filters
@@ -1,10 +1,11 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <component id="org.eclipse.jgit.lfs" version="2">
-    <resource path="META-INF/MANIFEST.MF">
-        <filter id="924844039">
+    <resource path="src/org/eclipse/jgit/lfs/lib/AnyLongObjectId.java" type="org.eclipse.jgit.lfs.lib.AnyLongObjectId">
+        <filter id="1141899266">
             <message_arguments>
-                <message_argument value="5.4.1"/>
-                <message_argument value="5.4.0"/>
+                <message_argument value="5.4"/>
+                <message_argument value="5.5"/>
+                <message_argument value="isEqual(AnyLongObjectId, AnyLongObjectId)"/>
             </message_arguments>
         </filter>
     </resource>
diff --git a/org.eclipse.jgit.lfs/META-INF/MANIFEST.MF b/org.eclipse.jgit.lfs/META-INF/MANIFEST.MF
index ad36094..ce2cc58 100644
--- a/org.eclipse.jgit.lfs/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.lfs/META-INF/MANIFEST.MF
@@ -1,35 +1,35 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.lfs
 Bundle-SymbolicName: org.eclipse.jgit.lfs
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
-Export-Package: org.eclipse.jgit.lfs;version="5.4.1",
- org.eclipse.jgit.lfs.errors;version="5.4.1",
- org.eclipse.jgit.lfs.internal;version="5.4.1";x-friends:="org.eclipse.jgit.lfs.test,org.eclipse.jgit.lfs.server.fs,org.eclipse.jgit.lfs.server",
- org.eclipse.jgit.lfs.lib;version="5.4.1"
+Bundle-Vendor: %Bundle-Vendor
+Export-Package: org.eclipse.jgit.lfs;version="5.5.0",
+ org.eclipse.jgit.lfs.errors;version="5.5.0",
+ org.eclipse.jgit.lfs.internal;version="5.5.0";x-friends:="org.eclipse.jgit.lfs.test,org.eclipse.jgit.lfs.server.fs,org.eclipse.jgit.lfs.server",
+ org.eclipse.jgit.lfs.lib;version="5.5.0"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: com.google.gson;version="[2.8.2,3.0.0)",
  com.google.gson.stream;version="[2.8.2,3.0.0)",
  org.apache.http.impl.client;version="[4.2.6,5.0.0)",
  org.apache.http.impl.conn;version="[4.2.6,5.0.0)",
- org.eclipse.jgit.annotations;version="[5.4.1,5.5.0)";resolution:=optional,
- org.eclipse.jgit.api.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.attributes;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.diff;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.hooks;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.pack;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util.io;version="[5.4.1,5.5.0)"
+ org.eclipse.jgit.annotations;version="[5.5.0,5.6.0)";resolution:=optional,
+ org.eclipse.jgit.api.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.attributes;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.diff;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.hooks;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.pack;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util.io;version="[5.5.0,5.6.0)"
diff --git a/org.eclipse.jgit.lfs/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.lfs/META-INF/SOURCE-MANIFEST.MF
index 517ec19..d401066 100644
--- a/org.eclipse.jgit.lfs/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.lfs/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.lfs - Sources
 Bundle-SymbolicName: org.eclipse.jgit.lfs.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.lfs;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.lfs;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.lfs/plugin.properties b/org.eclipse.jgit.lfs/plugin.properties
index 7c22ddb..76ead9b 100644
--- a/org.eclipse.jgit.lfs/plugin.properties
+++ b/org.eclipse.jgit.lfs/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Large File Storage
-provider_name=Eclipse JGit
+Bundle-Name=JGit Large File Storage
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.lfs/pom.xml b/org.eclipse.jgit.lfs/pom.xml
index 65532f1..d299479 100644
--- a/org.eclipse.jgit.lfs/pom.xml
+++ b/org.eclipse.jgit.lfs/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.lfs</artifactId>
diff --git a/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/Lfs.java b/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/Lfs.java
index 4c46bbd..8dba09c 100644
--- a/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/Lfs.java
+++ b/org.eclipse.jgit.lfs/src/org/eclipse/jgit/lfs/Lfs.java
@@ -42,6 +42,8 @@
  */
 package org.eclipse.jgit.lfs;
 
+import static org.eclipse.jgit.lib.Constants.OBJECTS;
+
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -104,7 +106,7 @@
 	 */
 	public Path getLfsObjDir() {
 		if (objDir == null) {
-			objDir = root.resolve("objects"); //$NON-NLS-1$
+			objDir = root.resolve(OBJECTS);
 		}
 		return objDir;
 	}
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/feature.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/feature.xml
index 3a4c048..732f4a3 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/feature.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.jgit"
       label="%featureName"
-      version="5.4.1.qualifier"
+      version="5.5.0.qualifier"
       provider-name="%providerName">
 
    <description url="http://www.eclipse.org/jgit/">
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/pom.xml
index 33d8567..e4d107f 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.feature/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.eclipse.jgit.feature</groupId>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/feature.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/feature.xml
index 91264db..5edb75c 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/feature.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.jgit.http.apache"
       label="%featureName"
-      version="5.4.1.qualifier"
+      version="5.5.0.qualifier"
       provider-name="%providerName">
 
    <description url="http://www.eclipse.org/jgit/">
@@ -23,7 +23,7 @@
    </url>
 
    <requires>
-      <import plugin="org.eclipse.jgit" version="5.4.1" match="equivalent"/>
+      <import plugin="org.eclipse.jgit" version="5.5.0" match="equivalent"/>
    </requires>
 
    <plugin
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/pom.xml
index cdf1cbd..72f7253 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.http.apache.feature/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.eclipse.jgit.feature</groupId>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/feature.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/feature.xml
index 52faeec..0e45f98 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/feature.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.jgit.junit"
       label="%featureName"
-      version="5.4.1.qualifier"
+      version="5.5.0.qualifier"
       provider-name="%providerName">
 
    <description url="http://www.eclipse.org/jgit/">
@@ -24,7 +24,7 @@
 
    <requires>
       <import plugin="com.jcraft.jsch"/>
-      <import plugin="org.eclipse.jgit" version="5.4.1" match="equivalent"/>
+      <import plugin="org.eclipse.jgit" version="5.5.0" match="equivalent"/>
    </requires>
 
    <plugin
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/pom.xml
index 79a2e84..004de58 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.junit.feature/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.eclipse.jgit.feature</groupId>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/feature.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/feature.xml
index 39db64a..7db8c38 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/feature.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.jgit.lfs"
       label="%featureName"
-      version="5.4.1.qualifier"
+      version="5.5.0.qualifier"
       provider-name="%providerName">
 
    <description url="http://www.eclipse.org/jgit/">
@@ -23,7 +23,7 @@
    </url>
 
    <requires>
-      <import feature="org.eclipse.jgit" version="5.4.1" match="equivalent"/>
+      <import feature="org.eclipse.jgit" version="5.5.0" match="equivalent"/>
    </requires>
 
    <plugin
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/pom.xml
index 2825df6..bf14a8b 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.lfs.feature/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.eclipse.jgit.feature</groupId>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/feature.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/feature.xml
index 14bfd01..4569798 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/feature.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.jgit.pgm"
       label="%featureName"
-      version="5.4.1.qualifier"
+      version="5.5.0.qualifier"
       provider-name="%providerName">
 
    <description url="http://www.eclipse.org/jgit/">
@@ -35,9 +35,9 @@
          version="0.0.0"/>
 
    <requires>
-      <import feature="org.eclipse.jgit" version="5.4.1" match="equivalent"/>
-      <import feature="org.eclipse.jgit.lfs" version="5.4.1" match="equivalent"/>
-      <import feature="org.eclipse.jgit.ssh.apache" version="5.4.1" match="equivalent"/>
+      <import feature="org.eclipse.jgit" version="5.5.0" match="equivalent"/>
+      <import feature="org.eclipse.jgit.lfs" version="5.5.0" match="equivalent"/>
+      <import feature="org.eclipse.jgit.ssh.apache" version="5.5.0" match="equivalent"/>
    </requires>
 
    <plugin
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/pom.xml
index 39772c7..6d61c40 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.pgm.feature/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.eclipse.jgit.feature</groupId>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.repository/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.repository/pom.xml
index dc2ad15..d66bac6 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.repository/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.repository/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.repository</artifactId>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/feature.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/feature.xml
index 8e8fd8a..5154d44 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/feature.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.jgit.source"
       label="%featureName"
-      version="5.4.1.qualifier"
+      version="5.5.0.qualifier"
       provider-name="%providerName">
 
    <description url="http://www.eclipse.org/jgit/">
@@ -23,7 +23,7 @@
    </url>
 
    <requires>
-      <import feature="org.eclipse.jgit" version="5.4.1" match="equivalent"/>
+      <import feature="org.eclipse.jgit" version="5.5.0" match="equivalent"/>
    </requires>
 
    <plugin
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/pom.xml
index 8132710..9fe2854 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.source.feature/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.eclipse.jgit.feature</groupId>
@@ -63,7 +63,7 @@
     <dependency>
       <groupId>org.eclipse.jgit.feature</groupId>
       <artifactId>org.eclipse.jgit</artifactId>
-      <version>5.4.1-SNAPSHOT</version>
+      <version>5.5.0-SNAPSHOT</version>
     </dependency>
   </dependencies>
 
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/feature.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/feature.xml
index b7420dc..5cf2c74 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/feature.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/feature.xml
@@ -2,7 +2,7 @@
 <feature
       id="org.eclipse.jgit.ssh.apache"
       label="%featureName"
-      version="5.4.1.qualifier"
+      version="5.5.0.qualifier"
       provider-name="%providerName">
 
    <description url="http://www.eclipse.org/jgit/">
@@ -23,7 +23,7 @@
    </url>
 
    <requires>
-      <import feature="org.eclipse.jgit" version="5.4.1" match="equivalent"/>
+      <import feature="org.eclipse.jgit" version="5.5.0" match="equivalent"/>
    </requires>
 
    <plugin
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/pom.xml
index 167b295..2c1de89 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.ssh.apache.feature/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.eclipse.jgit.feature</groupId>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.target
index 1915747..f5eca33 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.target
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/eclipse-cbi/targetplatform-dsl -->
-<target name="jgit-4.10" sequenceNumber="1559548426">
+<target name="jgit-4.10" sequenceNumber="1560816180">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.14.v20181114"/>
@@ -54,12 +54,12 @@
       <unit id="javaewah.source" version="1.1.6.v20160919-1400"/>
       <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
       <unit id="org.objenesis.source" version="2.6.0.v20180420-1519"/>
-      <unit id="org.mockito" version="2.13.0.v20180426-1843"/>
-      <unit id="org.mockito.source" version="2.13.0.v20180426-1843"/>
-      <unit id="net.bytebuddy.byte-buddy" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy.source" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.7.9.v20180420-1519"/>
+      <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
+      <unit id="org.mockito.source" version="2.23.0.v20190527-1420"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy.source" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
+      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.9.0.v20181106-1534"/>
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
       <unit id="com.google.gson.source" version="2.8.2.v20180104-1110"/>
       <unit id="com.jcraft.jsch" version="0.1.55.v20190404-1902"/>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.target
index e5ea331..bdbc75a 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.target
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/eclipse-cbi/targetplatform-dsl -->
-<target name="jgit-4.11" sequenceNumber="1559548429">
+<target name="jgit-4.11" sequenceNumber="1560816197">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.14.v20181114"/>
@@ -54,12 +54,12 @@
       <unit id="javaewah.source" version="1.1.6.v20160919-1400"/>
       <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
       <unit id="org.objenesis.source" version="2.6.0.v20180420-1519"/>
-      <unit id="org.mockito" version="2.13.0.v20180426-1843"/>
-      <unit id="org.mockito.source" version="2.13.0.v20180426-1843"/>
-      <unit id="net.bytebuddy.byte-buddy" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy.source" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.7.9.v20180420-1519"/>
+      <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
+      <unit id="org.mockito.source" version="2.23.0.v20190527-1420"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy.source" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
+      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.9.0.v20181106-1534"/>
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
       <unit id="com.google.gson.source" version="2.8.2.v20180104-1110"/>
       <unit id="com.jcraft.jsch" version="0.1.55.v20190404-1902"/>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12-staging.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12-staging.target
index 5daa8e8..e98c89e 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12-staging.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12-staging.target
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/eclipse-cbi/targetplatform-dsl -->
-<target name="jgit-4.12-staging" sequenceNumber="1559548433">
+<target name="jgit-4.12-staging" sequenceNumber="1560816219">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.14.v20181114"/>
@@ -54,12 +54,12 @@
       <unit id="javaewah.source" version="1.1.6.v20160919-1400"/>
       <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
       <unit id="org.objenesis.source" version="2.6.0.v20180420-1519"/>
-      <unit id="org.mockito" version="2.13.0.v20180426-1843"/>
-      <unit id="org.mockito.source" version="2.13.0.v20180426-1843"/>
-      <unit id="net.bytebuddy.byte-buddy" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy.source" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.7.9.v20180420-1519"/>
+      <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
+      <unit id="org.mockito.source" version="2.23.0.v20190527-1420"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy.source" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
+      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.9.0.v20181106-1534"/>
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
       <unit id="com.google.gson.source" version="2.8.2.v20180104-1110"/>
       <unit id="com.jcraft.jsch" version="0.1.55.v20190404-1902"/>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.target
index 0638b46..308f9f9 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.target
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/eclipse-cbi/targetplatform-dsl -->
-<target name="jgit-4.6" sequenceNumber="1559548436">
+<target name="jgit-4.6" sequenceNumber="1560816227">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.14.v20181114"/>
@@ -54,12 +54,12 @@
       <unit id="javaewah.source" version="1.1.6.v20160919-1400"/>
       <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
       <unit id="org.objenesis.source" version="2.6.0.v20180420-1519"/>
-      <unit id="org.mockito" version="2.13.0.v20180426-1843"/>
-      <unit id="org.mockito.source" version="2.13.0.v20180426-1843"/>
-      <unit id="net.bytebuddy.byte-buddy" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy.source" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.7.9.v20180420-1519"/>
+      <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
+      <unit id="org.mockito.source" version="2.23.0.v20190527-1420"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy.source" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
+      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.9.0.v20181106-1534"/>
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
       <unit id="com.google.gson.source" version="2.8.2.v20180104-1110"/>
       <unit id="com.jcraft.jsch" version="0.1.55.v20190404-1902"/>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.target
index 1044299..eeae219 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.target
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/eclipse-cbi/targetplatform-dsl -->
-<target name="jgit-4.7" sequenceNumber="1559548440">
+<target name="jgit-4.7" sequenceNumber="1560816219">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.14.v20181114"/>
@@ -54,12 +54,12 @@
       <unit id="javaewah.source" version="1.1.6.v20160919-1400"/>
       <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
       <unit id="org.objenesis.source" version="2.6.0.v20180420-1519"/>
-      <unit id="org.mockito" version="2.13.0.v20180426-1843"/>
-      <unit id="org.mockito.source" version="2.13.0.v20180426-1843"/>
-      <unit id="net.bytebuddy.byte-buddy" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy.source" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.7.9.v20180420-1519"/>
+      <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
+      <unit id="org.mockito.source" version="2.23.0.v20190527-1420"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy.source" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
+      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.9.0.v20181106-1534"/>
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
       <unit id="com.google.gson.source" version="2.8.2.v20180104-1110"/>
       <unit id="com.jcraft.jsch" version="0.1.55.v20190404-1902"/>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.target
index a5f948f..4ada70f 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.target
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/eclipse-cbi/targetplatform-dsl -->
-<target name="jgit-4.8" sequenceNumber="1559548443">
+<target name="jgit-4.8" sequenceNumber="1560816217">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.14.v20181114"/>
@@ -54,12 +54,12 @@
       <unit id="javaewah.source" version="1.1.6.v20160919-1400"/>
       <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
       <unit id="org.objenesis.source" version="2.6.0.v20180420-1519"/>
-      <unit id="org.mockito" version="2.13.0.v20180426-1843"/>
-      <unit id="org.mockito.source" version="2.13.0.v20180426-1843"/>
-      <unit id="net.bytebuddy.byte-buddy" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy.source" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.7.9.v20180420-1519"/>
+      <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
+      <unit id="org.mockito.source" version="2.23.0.v20190527-1420"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy.source" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
+      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.9.0.v20181106-1534"/>
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
       <unit id="com.google.gson.source" version="2.8.2.v20180104-1110"/>
       <unit id="com.jcraft.jsch" version="0.1.55.v20190404-1902"/>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.target
index e0afda3..97c9de3 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.target
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde?>
 <!-- generated with https://github.com/eclipse-cbi/targetplatform-dsl -->
-<target name="jgit-4.9" sequenceNumber="1559548447">
+<target name="jgit-4.9" sequenceNumber="1560816222">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.14.v20181114"/>
@@ -54,12 +54,12 @@
       <unit id="javaewah.source" version="1.1.6.v20160919-1400"/>
       <unit id="org.objenesis" version="2.6.0.v20180420-1519"/>
       <unit id="org.objenesis.source" version="2.6.0.v20180420-1519"/>
-      <unit id="org.mockito" version="2.13.0.v20180426-1843"/>
-      <unit id="org.mockito.source" version="2.13.0.v20180426-1843"/>
-      <unit id="net.bytebuddy.byte-buddy" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy.source" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent" version="1.7.9.v20180420-1519"/>
-      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.7.9.v20180420-1519"/>
+      <unit id="org.mockito" version="2.23.0.v20190527-1420"/>
+      <unit id="org.mockito.source" version="2.23.0.v20190527-1420"/>
+      <unit id="net.bytebuddy.byte-buddy" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy.source" version="1.9.0.v20181107-1410"/>
+      <unit id="net.bytebuddy.byte-buddy-agent" version="1.9.0.v20181106-1534"/>
+      <unit id="net.bytebuddy.byte-buddy-agent.source" version="1.9.0.v20181106-1534"/>
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
       <unit id="com.google.gson.source" version="2.8.2.v20180104-1110"/>
       <unit id="com.jcraft.jsch" version="0.1.55.v20190404-1902"/>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/orbit/R20190602212107-2019-06.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/orbit/R20190602212107-2019-06.tpd
index df9a810..e2f975e 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/orbit/R20190602212107-2019-06.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/orbit/R20190602212107-2019-06.tpd
@@ -33,12 +33,12 @@
 	javaewah.source [1.1.6.v20160919-1400,1.1.6.v20160919-1400]
 	org.objenesis [2.6.0.v20180420-1519,2.6.0.v20180420-1519]
 	org.objenesis.source [2.6.0.v20180420-1519,2.6.0.v20180420-1519]
-	org.mockito [2.13.0.v20180426-1843,2.13.0.v20180426-1843]
-	org.mockito.source [2.13.0.v20180426-1843,2.13.0.v20180426-1843]
-	net.bytebuddy.byte-buddy [1.7.9.v20180420-1519,1.7.9.v20180420-1519]
-	net.bytebuddy.byte-buddy.source [1.7.9.v20180420-1519,1.7.9.v20180420-1519]
-	net.bytebuddy.byte-buddy-agent [1.7.9.v20180420-1519,1.7.9.v20180420-1519]
-	net.bytebuddy.byte-buddy-agent.source [1.7.9.v20180420-1519,1.7.9.v20180420-1519]
+	org.mockito [2.23.0.v20190527-1420,2.23.0.v20190527-1420]
+	org.mockito.source [2.23.0.v20190527-1420,2.23.0.v20190527-1420]
+	net.bytebuddy.byte-buddy [1.9.0.v20181107-1410,1.9.0.v20181107-1410]
+	net.bytebuddy.byte-buddy.source [1.9.0.v20181107-1410,1.9.0.v20181107-1410]
+	net.bytebuddy.byte-buddy-agent [1.9.0.v20181106-1534,1.9.0.v20181106-1534]
+	net.bytebuddy.byte-buddy-agent.source [1.9.0.v20181106-1534,1.9.0.v20181106-1534]
 	com.google.gson [2.8.2.v20180104-1110,2.8.2.v20180104-1110]
 	com.google.gson.source [2.8.2.v20180104-1110,2.8.2.v20180104-1110]
 	com.jcraft.jsch [0.1.55.v20190404-1902,0.1.55.v20190404-1902]
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/pom.xml b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/pom.xml
index e632224..44355f0 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/pom.xml
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/pom.xml
@@ -49,7 +49,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>jgit.tycho.parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.target</artifactId>
diff --git a/org.eclipse.jgit.packaging/pom.xml b/org.eclipse.jgit.packaging/pom.xml
index 6c5ced3..1e17c9d 100644
--- a/org.eclipse.jgit.packaging/pom.xml
+++ b/org.eclipse.jgit.packaging/pom.xml
@@ -49,7 +49,7 @@
 
   <groupId>org.eclipse.jgit</groupId>
   <artifactId>jgit.tycho.parent</artifactId>
-  <version>5.4.1-SNAPSHOT</version>
+  <version>5.5.0-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>JGit Tycho Parent</name>
diff --git a/org.eclipse.jgit.pgm.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.pgm.test/META-INF/MANIFEST.MF
index 920c0cf..4f74752 100644
--- a/org.eclipse.jgit.pgm.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.pgm.test/META-INF/MANIFEST.MF
@@ -1,30 +1,30 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.pgm.test
 Bundle-SymbolicName: org.eclipse.jgit.pgm.test
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %provider_name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
 Bundle-Localization: plugin
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Import-Package: org.eclipse.jgit.api;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.api.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.diff;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.dircache;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="5.4.1",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.merge;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.pgm;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.pgm.internal;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.pgm.opt;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util.io;version="[5.4.1,5.5.0)",
+Import-Package: org.eclipse.jgit.api;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.api.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.diff;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.dircache;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="5.5.0",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.merge;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.pgm;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.pgm.internal;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.pgm.opt;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util.io;version="[5.5.0,5.6.0)",
  org.hamcrest.core;bundle-version="[1.1.0,2.0.0)",
  org.junit;version="[4.12,5.0.0)",
  org.junit.rules;version="[4.12,5.0.0)",
diff --git a/org.eclipse.jgit.pgm.test/plugin.properties b/org.eclipse.jgit.pgm.test/plugin.properties
index e131c69..61cae8e 100644
--- a/org.eclipse.jgit.pgm.test/plugin.properties
+++ b/org.eclipse.jgit.pgm.test/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Command Line Interface Tests
-provider_name=Eclipse JGit
+Bundle-Name=JGit Command Line Interface Tests
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.pgm.test/pom.xml b/org.eclipse.jgit.pgm.test/pom.xml
index fb493f8..1d1c03b 100644
--- a/org.eclipse.jgit.pgm.test/pom.xml
+++ b/org.eclipse.jgit.pgm.test/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.pgm.test</artifactId>
diff --git a/org.eclipse.jgit.pgm.test/src/org/eclipse/jgit/lib/CLIRepositoryTestCase.java b/org.eclipse.jgit.pgm.test/src/org/eclipse/jgit/lib/CLIRepositoryTestCase.java
index a830ff2..befb7f6 100644
--- a/org.eclipse.jgit.pgm.test/src/org/eclipse/jgit/lib/CLIRepositoryTestCase.java
+++ b/org.eclipse.jgit.pgm.test/src/org/eclipse/jgit/lib/CLIRepositoryTestCase.java
@@ -211,6 +211,14 @@
 				.replaceAll("\t", "\\\\t");
 	}
 
+	protected String shellQuote(String s) {
+		return "'" + s.replace("'", "'\\''") + "'";
+	}
+
+	protected String shellQuote(File f) {
+		return "'" + f.getPath().replace("'", "'\\''") + "'";
+	}
+
 	protected void assertStringArrayEquals(String expected, String[] actual) {
 		// if there is more than one line, ignore last one if empty
 		assertEquals(1,
diff --git a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/ArchiveTest.java b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/ArchiveTest.java
index e07fdd5..03aa469 100644
--- a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/ArchiveTest.java
+++ b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/ArchiveTest.java
@@ -139,10 +139,6 @@
 				listTarEntries(result));
 	}
 
-	private static String shellQuote(String s) {
-		return "'" + s.replace("'", "'\\''") + "'";
-	}
-
 	@Test
 	public void testFormatOverridesFilename() throws Exception {
 		File archive = new File(db.getWorkTree(), "format-overrides-name.tar");
diff --git a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/CloneTest.java b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/CloneTest.java
index 2c0abd7..c31f28c 100644
--- a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/CloneTest.java
+++ b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/CloneTest.java
@@ -78,9 +78,9 @@
 		File gitDir = db.getDirectory();
 		String sourceURI = gitDir.toURI().toString();
 		File target = createTempDirectory("target");
-		StringBuilder cmd = new StringBuilder("git clone ").append(sourceURI
-				+ " " + target.getPath());
-		String[] result = execute(cmd.toString());
+		String cmd = "git clone " + sourceURI + " "
+				+ shellQuote(target.getPath());
+		String[] result = execute(cmd);
 		assertArrayEquals(new String[] {
 				"Cloning into '" + target.getPath() + "'...",
 						"", "" }, result);
@@ -101,9 +101,9 @@
 		File gitDir = db.getDirectory();
 		String sourceURI = gitDir.toURI().toString();
 		File target = createTempDirectory("target");
-		StringBuilder cmd = new StringBuilder("git clone ").append(sourceURI
-				+ " " + target.getPath());
-		String[] result = execute(cmd.toString());
+		String cmd = "git clone " + sourceURI + " "
+				+ shellQuote(target.getPath());
+		String[] result = execute(cmd);
 		assertArrayEquals(new String[] {
 				"Cloning into '" + target.getPath() + "'...",
 				"warning: You appear to have cloned an empty repository.", "",
@@ -125,8 +125,8 @@
 		File gitDir = db.getDirectory();
 		String sourceURI = gitDir.toURI().toString();
 		String name = new URIish(sourceURI).getHumanishName();
-		StringBuilder cmd = new StringBuilder("git clone ").append(sourceURI);
-		String[] result = execute(cmd.toString());
+		String cmd = "git clone " + sourceURI;
+		String[] result = execute(cmd);
 		assertArrayEquals(new String[] {
 				"Cloning into '" + new File(target, name).getName() + "'...",
 				"", "" }, result);
@@ -143,10 +143,10 @@
 		String sourcePath = gitDir.getAbsolutePath();
 		String targetPath = (new File(sourcePath)).getParentFile()
 				.getParentFile().getAbsolutePath()
-				+ "/target.git";
-		StringBuilder cmd = new StringBuilder("git clone --bare ")
-				.append(sourcePath + " " + targetPath);
-		String[] result = execute(cmd.toString());
+				+ File.separator + "target.git";
+		String cmd = "git clone --bare " + shellQuote(sourcePath) + " "
+				+ shellQuote(targetPath);
+		String[] result = execute(cmd);
 		assertArrayEquals(new String[] {
 				"Cloning into '" + targetPath + "'...", "", "" }, result);
 		Git git2 = Git.open(new File(targetPath));
diff --git a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/LsRemoteTest.java b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/LsRemoteTest.java
index ba6b771..fd3c383 100644
--- a/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/LsRemoteTest.java
+++ b/org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/LsRemoteTest.java
@@ -80,7 +80,7 @@
 	@Test
 	public void testLsRemote() throws Exception {
 		final List<String> result = CLIGitCommand.execute(
-				"git ls-remote " + db.getDirectory(), db);
+				"git ls-remote " + shellQuote(db.getDirectory()), db);
 		assertArrayEquals(new String[] {
 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	HEAD",
 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/master",
@@ -98,7 +98,8 @@
 	public void testLsRemoteHeads() throws Exception {
 		final List<String> result = CLIGitCommand.execute(
 				"git ls-remote --heads "
-				+ db.getDirectory(), db);
+						+ shellQuote(db.getDirectory()),
+				db);
 		assertArrayEquals(new String[] {
 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/master",
 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/test",
@@ -108,7 +109,7 @@
 	@Test
 	public void testLsRemoteTags() throws Exception {
 		final List<String> result = CLIGitCommand.execute(
-				"git ls-remote --tags " + db.getDirectory(), db);
+				"git ls-remote --tags " + shellQuote(db.getDirectory()), db);
 		assertArrayEquals(new String[] {
 				"efc02078d83a5226986ae917323acec7e1e8b7cb	refs/tags/tag1",
 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/tags/tag1^{}",
@@ -122,7 +123,8 @@
 	@Test
 	public void testLsRemoteHeadsTags() throws Exception {
 		final List<String> result = CLIGitCommand.execute(
-				"git ls-remote --heads --tags " + db.getDirectory(), db);
+				"git ls-remote --heads --tags " + shellQuote(db.getDirectory()),
+				db);
 		assertArrayEquals(new String[] {
 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/master",
 				"d0b1ef2b3dea02bb2ca824445c04e6def012c32c	refs/heads/test",
diff --git a/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF b/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF
index 9c313aa..14a14b2 100644
--- a/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.pgm/META-INF/MANIFEST.MF
@@ -1,10 +1,10 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.pgm
 Bundle-SymbolicName: org.eclipse.jgit.pgm
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %provider_name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
 Bundle-ActivationPolicy: lazy
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
@@ -28,50 +28,50 @@
  org.eclipse.jetty.util.log;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.security;version="[9.4.5,10.0.0)",
  org.eclipse.jetty.util.thread;version="[9.4.5,10.0.0)",
- org.eclipse.jgit.api;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.api.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.archive;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.awtui;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.blame;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.diff;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.dircache;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.gitrepo;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.ketch;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.dfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.io;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.pack;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.reftable;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.reftree;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.server;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.server.fs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs.server.s3;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.merge;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.notes;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revplot;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.pack;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http.apache;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.resolver;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.sshd;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util.io;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.api;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.api.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.archive;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.awtui;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.blame;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.diff;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.dircache;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.gitrepo;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.ketch;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.dfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.io;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.pack;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.reftable;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.reftree;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.server;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.server.fs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs.server.s3;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.merge;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.notes;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revplot;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.pack;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http.apache;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.resolver;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.sshd;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util.io;version="[5.5.0,5.6.0)",
  org.kohsuke.args4j;version="[2.33.0,3.0.0)",
  org.kohsuke.args4j.spi;version="[2.33.0,3.0.0)"
-Export-Package: org.eclipse.jgit.console;version="5.4.1";
+Export-Package: org.eclipse.jgit.console;version="5.5.0";
   uses:="org.eclipse.jgit.transport,
    org.eclipse.jgit.util",
- org.eclipse.jgit.pgm;version="5.4.1";
+ org.eclipse.jgit.pgm;version="5.5.0";
   uses:="org.eclipse.jgit.revwalk,
    org.eclipse.jgit.treewalk.filter,
    org.eclipse.jgit.pgm.opt,
@@ -82,11 +82,11 @@
    org.eclipse.jgit.treewalk,
    javax.swing,
    org.eclipse.jgit.transport",
- org.eclipse.jgit.pgm.debug;version="5.4.1";
+ org.eclipse.jgit.pgm.debug;version="5.5.0";
   uses:="org.eclipse.jgit.util.io,
    org.eclipse.jgit.pgm",
- org.eclipse.jgit.pgm.internal;version="5.4.1";x-friends:="org.eclipse.jgit.pgm.test,org.eclipse.jgit.test",
- org.eclipse.jgit.pgm.opt;version="5.4.1";
+ org.eclipse.jgit.pgm.internal;version="5.5.0";x-friends:="org.eclipse.jgit.pgm.test,org.eclipse.jgit.test",
+ org.eclipse.jgit.pgm.opt;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.revwalk,
    org.kohsuke.args4j.spi,
diff --git a/org.eclipse.jgit.pgm/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.pgm/META-INF/SOURCE-MANIFEST.MF
index 9be8fb2..d5323ba 100644
--- a/org.eclipse.jgit.pgm/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.pgm/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.pgm - Sources
 Bundle-SymbolicName: org.eclipse.jgit.pgm.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.pgm;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.pgm;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.pgm/plugin.properties b/org.eclipse.jgit.pgm/plugin.properties
index 118fe47..bfa216c 100644
--- a/org.eclipse.jgit.pgm/plugin.properties
+++ b/org.eclipse.jgit.pgm/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Command Line Interface
-provider_name=Eclipse JGit
+Bundle-Name=JGit Command Line Interface
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.pgm/pom.xml b/org.eclipse.jgit.pgm/pom.xml
index 389b180..c6af997 100644
--- a/org.eclipse.jgit.pgm/pom.xml
+++ b/org.eclipse.jgit.pgm/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.pgm</artifactId>
diff --git a/org.eclipse.jgit.ssh.apache.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.ssh.apache.test/META-INF/MANIFEST.MF
index a97bf78..504a20e 100644
--- a/org.eclipse.jgit.ssh.apache.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.ssh.apache.test/META-INF/MANIFEST.MF
@@ -3,17 +3,19 @@
 Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.ssh.apache.test
 Bundle-SymbolicName: org.eclipse.jgit.ssh.apache.test
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %Provider-Name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
+Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Import-Package: org.eclipse.jgit.internal.transport.sshd.proxy;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit.ssh;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.ssh;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.sshd;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+Import-Package: org.eclipse.jgit.api.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.transport.sshd.proxy;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit.ssh;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.ssh;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.sshd;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.junit;version="[4.12,5.0.0)",
  org.junit.experimental.theories;version="[4.12,5.0.0)",
  org.junit.runner;version="[4.12,5.0.0)"
diff --git a/org.eclipse.jgit.ssh.apache.test/plugin.properties b/org.eclipse.jgit.ssh.apache.test/plugin.properties
index 67c296d..b279c8f 100644
--- a/org.eclipse.jgit.ssh.apache.test/plugin.properties
+++ b/org.eclipse.jgit.ssh.apache.test/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Tests for SSH with Apache MINA sshd
-provider_name=Eclipse JGit
+Bundle-Name=JGit Tests for SSH with Apache MINA sshd
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.ssh.apache.test/pom.xml b/org.eclipse.jgit.ssh.apache.test/pom.xml
index 00bd403..23d6f8f 100644
--- a/org.eclipse.jgit.ssh.apache.test/pom.xml
+++ b/org.eclipse.jgit.ssh.apache.test/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.ssh.apache.test</artifactId>
diff --git a/org.eclipse.jgit.ssh.apache.test/tst/org/eclipse/jgit/transport/sshd/ApacheSshTest.java b/org.eclipse.jgit.ssh.apache.test/tst/org/eclipse/jgit/transport/sshd/ApacheSshTest.java
index ee58083..df0b832 100644
--- a/org.eclipse.jgit.ssh.apache.test/tst/org/eclipse/jgit/transport/sshd/ApacheSshTest.java
+++ b/org.eclipse.jgit.ssh.apache.test/tst/org/eclipse/jgit/transport/sshd/ApacheSshTest.java
@@ -47,7 +47,7 @@
 import java.io.UncheckedIOException;
 import java.nio.file.Files;
 import java.util.Arrays;
-
+import org.eclipse.jgit.api.errors.TransportException;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.transport.SshSessionFactory;
 import org.eclipse.jgit.transport.ssh.SshTestBase;
@@ -82,11 +82,10 @@
 		}
 	}
 
-	// Using an ed25519 (unencrypted) user key is tested in the super class in
-	// testSshKeys(). sshd 2.0.0 cannot yet read encrypted ed25519 keys.
-
 	@Test
 	public void testEd25519HostKey() throws Exception {
+		// Using ed25519 user identities is tested in the super class in
+		// testSshKeys().
 		File newHostKey = new File(getTemporaryDirectory(), "newhostkey");
 		copyTestResource("id_ed25519", newHostKey);
 		server.addHostKey(newHostKey.toPath(), true);
@@ -102,4 +101,60 @@
 				"IdentityFile " + privateKey1.getAbsolutePath());
 	}
 
+	@Test
+	public void testPreamble() throws Exception {
+		// Test that the client can deal with strange lines being sent before
+		// the server identification string.
+		StringBuilder b = new StringBuilder();
+		for (int i = 0; i < 257; i++) {
+			b.append('a');
+		}
+		server.setPreamble("A line with a \000 NUL",
+				"A long line: " + b.toString());
+		cloneWith(
+				"ssh://" + TEST_USER + "@localhost:" + testPort
+						+ "/doesntmatter",
+				defaultCloneDir, null,
+				"IdentityFile " + privateKey1.getAbsolutePath());
+	}
+
+	@Test
+	public void testLongPreamble() throws Exception {
+		// Test that the client can deal with a long (about 60k) preamble.
+		StringBuilder b = new StringBuilder();
+		for (int i = 0; i < 1024; i++) {
+			b.append('a');
+		}
+		String line = b.toString();
+		String[] lines = new String[60];
+		for (int i = 0; i < lines.length; i++) {
+			lines[i] = line;
+		}
+		server.setPreamble(lines);
+		cloneWith(
+				"ssh://" + TEST_USER + "@localhost:" + testPort
+						+ "/doesntmatter",
+				defaultCloneDir, null,
+				"IdentityFile " + privateKey1.getAbsolutePath());
+	}
+
+	@Test (expected = TransportException.class)
+	public void testHugePreamble() throws Exception {
+		// Test that the connection fails when the preamble is longer than 64k.
+		StringBuilder b = new StringBuilder();
+		for (int i = 0; i < 1024; i++) {
+			b.append('a');
+		}
+		String line = b.toString();
+		String[] lines = new String[70];
+		for (int i = 0; i < lines.length; i++) {
+			lines[i] = line;
+		}
+		server.setPreamble(lines);
+		cloneWith(
+				"ssh://" + TEST_USER + "@localhost:" + testPort
+						+ "/doesntmatter",
+				defaultCloneDir, null,
+				"IdentityFile " + privateKey1.getAbsolutePath());
+	}
 }
diff --git a/org.eclipse.jgit.ssh.apache/META-INF/MANIFEST.MF b/org.eclipse.jgit.ssh.apache/META-INF/MANIFEST.MF
index 1aecee0..e9f5302 100644
--- a/org.eclipse.jgit.ssh.apache/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.ssh.apache/META-INF/MANIFEST.MF
@@ -3,11 +3,12 @@
 Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.ssh.apache
 Bundle-SymbolicName: org.eclipse.jgit.ssh.apache
-Bundle-Vendor: %Provider-Name
+Bundle-Vendor: %Bundle-Vendor
+Bundle-Localization: plugin
 Bundle-ActivationPolicy: lazy
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Export-Package: org.eclipse.jgit.internal.transport.sshd;version="5.4.1";x-internal:=true;
+Export-Package: org.eclipse.jgit.internal.transport.sshd;version="5.5.0";x-internal:=true;
   uses:="org.apache.sshd.client,
    org.apache.sshd.client.auth,
    org.apache.sshd.client.auth.keyboard,
@@ -22,9 +23,9 @@
    org.apache.sshd.common.signature,
    org.apache.sshd.common.util.buffer,
    org.eclipse.jgit.transport",
- org.eclipse.jgit.internal.transport.sshd.auth;version="5.4.1";x-internal:=true,
- org.eclipse.jgit.internal.transport.sshd.proxy;version="5.4.1";x-friends:="org.eclipse.jgit.ssh.apache.test",
- org.eclipse.jgit.transport.sshd;version="5.4.1";
+ org.eclipse.jgit.internal.transport.sshd.auth;version="5.5.0";x-internal:=true,
+ org.eclipse.jgit.internal.transport.sshd.proxy;version="5.5.0";x-friends:="org.eclipse.jgit.ssh.apache.test",
+ org.eclipse.jgit.transport.sshd;version="5.5.0";
   uses:="org.eclipse.jgit.transport,
    org.apache.sshd.client.config.hosts,
    org.apache.sshd.common.keyprovider,
@@ -74,12 +75,12 @@
  org.apache.sshd.common.util.net;version="[2.2.0,2.3.0)",
  org.apache.sshd.common.util.security;version="[2.2.0,2.3.0)",
  org.apache.sshd.server.auth;version="[2.2.0,2.3.0)",
- org.eclipse.jgit.annotations;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.fnmatch;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.transport.ssh;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.annotations;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.fnmatch;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.transport.ssh;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
  org.slf4j;version="[1.7.0,2.0.0)"
diff --git a/org.eclipse.jgit.ssh.apache/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.ssh.apache/META-INF/SOURCE-MANIFEST.MF
index deae0d4..4e69a1d 100644
--- a/org.eclipse.jgit.ssh.apache/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.ssh.apache/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.ssh.apache - Sources
 Bundle-SymbolicName: org.eclipse.jgit.ssh.apache.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.ssh.apache;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.ssh.apache;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.ssh.apache/plugin.properties b/org.eclipse.jgit.ssh.apache/plugin.properties
index 8f3540c..8358cc1 100644
--- a/org.eclipse.jgit.ssh.apache/plugin.properties
+++ b/org.eclipse.jgit.ssh.apache/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit SSH support based on Apache MINA sshd
-provider_name=Eclipse JGit
+Bundle-Name=JGit SSH support based on Apache MINA sshd
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.ssh.apache/pom.xml b/org.eclipse.jgit.ssh.apache/pom.xml
index a7f5bae..9ec2f61 100644
--- a/org.eclipse.jgit.ssh.apache/pom.xml
+++ b/org.eclipse.jgit.ssh.apache/pom.xml
@@ -50,7 +50,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.ssh.apache</artifactId>
diff --git a/org.eclipse.jgit.ssh.apache/resources/org/eclipse/jgit/internal/transport/sshd/SshdText.properties b/org.eclipse.jgit.ssh.apache/resources/org/eclipse/jgit/internal/transport/sshd/SshdText.properties
index bdb4a7d..4f85ebe 100644
--- a/org.eclipse.jgit.ssh.apache/resources/org/eclipse/jgit/internal/transport/sshd/SshdText.properties
+++ b/org.eclipse.jgit.ssh.apache/resources/org/eclipse/jgit/internal/transport/sshd/SshdText.properties
@@ -71,6 +71,9 @@
 proxySocksUnexpectedMessage=Unexpected message received from SOCKS5 proxy {0}; client state {1}: {2}
 proxySocksUnexpectedVersion=Expected SOCKS version 5, got {0}
 proxySocksUsernameTooLong=User name for proxy {0} must be at most 255 bytes long, is {1} bytes: {2}
+serverIdNotReceived=No server identification received within {0} bytes
+serverIdTooLong=Server identification is longer than 255 characters (including line ending): {0}
+serverIdWithNul=Server identification contains a NUL character: {0}
 sessionCloseFailed=Closing the session failed
 sshClosingDown=Apache MINA sshd session factory is closing down; cannot create new ssh sessions on this factory
 sshCommandTimeout={0} timed out after {1} seconds while opening the channel
diff --git a/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/JGitClientSession.java b/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/JGitClientSession.java
index 56f8ade..4ce4f6a 100644
--- a/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/JGitClientSession.java
+++ b/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/JGitClientSession.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018, Thomas Wolf <thomas.wolf@paranor.ch>
+ * Copyright (C) 2018, 2019 Thomas Wolf <thomas.wolf@paranor.ch>
  * and other copyright owners as documented in the project's IP log.
  *
  * This program and the accompanying materials are made available
@@ -46,6 +46,7 @@
 
 import java.io.IOException;
 import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
 import java.security.GeneralSecurityException;
 import java.security.PublicKey;
 import java.util.ArrayList;
@@ -60,11 +61,13 @@
 import org.apache.sshd.client.keyverifier.ServerKeyVerifier;
 import org.apache.sshd.client.session.ClientSessionImpl;
 import org.apache.sshd.common.FactoryManager;
+import org.apache.sshd.common.PropertyResolverUtils;
 import org.apache.sshd.common.SshException;
 import org.apache.sshd.common.config.keys.KeyUtils;
 import org.apache.sshd.common.io.IoSession;
 import org.apache.sshd.common.io.IoWriteFuture;
 import org.apache.sshd.common.util.Readable;
+import org.apache.sshd.common.util.buffer.Buffer;
 import org.eclipse.jgit.errors.InvalidPatternException;
 import org.eclipse.jgit.fnmatch.FileNameMatcher;
 import org.eclipse.jgit.internal.transport.sshd.proxy.StatefulProxyConnector;
@@ -82,11 +85,20 @@
  */
 public class JGitClientSession extends ClientSessionImpl {
 
+	/**
+	 * Default setting for the maximum number of bytes to read in the initial
+	 * protocol version exchange. 64kb is what OpenSSH < 8.0 read; OpenSSH 8.0
+	 * changed it to 8Mb, but that seems excessive for the purpose stated in RFC
+	 * 4253. The Apache MINA sshd default in
+	 * {@link FactoryManager#DEFAULT_MAX_IDENTIFICATION_SIZE} is 16kb.
+	 */
+	private static final int DEFAULT_MAX_IDENTIFICATION_SIZE = 64 * 1024;
+
 	private HostConfigEntry hostConfig;
 
 	private CredentialsProvider credentialsProvider;
 
-	private StatefulProxyConnector proxyHandler;
+	private volatile StatefulProxyConnector proxyHandler;
 
 	/**
 	 * @param manager
@@ -332,4 +344,123 @@
 		return newNames;
 	}
 
+	@Override
+	protected boolean readIdentification(Buffer buffer) throws IOException {
+		// Propagate a failure from doReadIdentification.
+		// TODO: remove for sshd > 2.3.0; its doReadIdentification throws
+		// StreamCorruptedException instead of IllegalStateException.
+		try {
+			return super.readIdentification(buffer);
+		} catch (IllegalStateException e) {
+			throw new IOException(e.getLocalizedMessage(), e);
+		}
+	}
+
+	/**
+	 * Reads the RFC 4253, section 4.2 protocol version identification. The
+	 * Apache MINA sshd default implementation checks for NUL bytes also in any
+	 * preceding lines, whereas RFC 4253 requires such a check only for the
+	 * actual identification string starting with "SSH-". Likewise, the 255
+	 * character limit exists only for the identification string, not for the
+	 * preceding lines. CR-LF handling is also relaxed.
+	 *
+	 * @param buffer
+	 *            to read from
+	 * @param server
+	 *            whether we're an SSH server (should always be {@code false})
+	 * @return the lines read, with the server identification line last, or
+	 *         {@code null} if no identification line was found and more bytes
+	 *         are needed
+	 *
+	 * @see <a href="https://tools.ietf.org/html/rfc4253#section-4.2">RFC 4253,
+	 *      section 4.2</a>
+	 */
+	@Override
+	protected List<String> doReadIdentification(Buffer buffer, boolean server) {
+		if (server) {
+			// Should never happen. No translation; internal bug.
+			throw new IllegalStateException(
+					"doReadIdentification of client called with server=true"); //$NON-NLS-1$
+		}
+		int maxIdentSize = PropertyResolverUtils.getIntProperty(this,
+				FactoryManager.MAX_IDENTIFICATION_SIZE,
+				DEFAULT_MAX_IDENTIFICATION_SIZE);
+		int current = buffer.rpos();
+		int end = current + buffer.available();
+		if (current >= end) {
+			return null;
+		}
+		byte[] raw = buffer.array();
+		List<String> ident = new ArrayList<>();
+		int start = current;
+		boolean hasNul = false;
+		for (int i = current; i < end; i++) {
+			switch (raw[i]) {
+			case 0:
+				hasNul = true;
+				break;
+			case '\n':
+				int eol = 1;
+				if (i > start && raw[i - 1] == '\r') {
+					eol++;
+				}
+				String line = new String(raw, start, i + 1 - eol - start,
+						StandardCharsets.UTF_8);
+				start = i + 1;
+				if (log.isDebugEnabled()) {
+					log.debug(format("doReadIdentification({0}) line: ", this) + //$NON-NLS-1$
+							escapeControls(line));
+				}
+				ident.add(line);
+				if (line.startsWith("SSH-")) { //$NON-NLS-1$
+					if (hasNul) {
+						throw new IllegalStateException(
+								format(SshdText.get().serverIdWithNul,
+										escapeControls(line)));
+					}
+					if (line.length() + eol > 255) {
+						throw new IllegalStateException(
+								format(SshdText.get().serverIdTooLong,
+										escapeControls(line)));
+					}
+					buffer.rpos(start);
+					return ident;
+				}
+				// If this were a server, we could throw an exception here: a
+				// client is not supposed to send any extra lines before its
+				// identification string.
+				hasNul = false;
+				break;
+			default:
+				break;
+			}
+			if (i - current + 1 >= maxIdentSize) {
+				String msg = format(SshdText.get().serverIdNotReceived,
+						Integer.toString(maxIdentSize));
+				if (log.isDebugEnabled()) {
+					log.debug(msg);
+					log.debug(buffer.toHex());
+				}
+				throw new IllegalStateException(msg);
+			}
+		}
+		// Need more data
+		return null;
+	}
+
+	private static String escapeControls(String s) {
+		StringBuilder b = new StringBuilder();
+		int l = s.length();
+		for (int i = 0; i < l; i++) {
+			char ch = s.charAt(i);
+			if (Character.isISOControl(ch)) {
+				b.append(ch <= 0xF ? "\\u000" : "\\u00") //$NON-NLS-1$ //$NON-NLS-2$
+						.append(Integer.toHexString(ch));
+			} else {
+				b.append(ch);
+			}
+		}
+		return b.toString();
+	}
+
 }
diff --git a/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/SshdText.java b/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/SshdText.java
index bf432be..f67170e 100644
--- a/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/SshdText.java
+++ b/org.eclipse.jgit.ssh.apache/src/org/eclipse/jgit/internal/transport/sshd/SshdText.java
@@ -83,6 +83,9 @@
 	/***/ public String proxySocksUnexpectedMessage;
 	/***/ public String proxySocksUnexpectedVersion;
 	/***/ public String proxySocksUsernameTooLong;
+	/***/ public String serverIdNotReceived;
+	/***/ public String serverIdTooLong;
+	/***/ public String serverIdWithNul;
 	/***/ public String sessionCloseFailed;
 	/***/ public String sshClosingDown;
 	/***/ public String sshCommandTimeout;
diff --git a/org.eclipse.jgit.test/META-INF/MANIFEST.MF b/org.eclipse.jgit.test/META-INF/MANIFEST.MF
index e92d6a7..53b79b0 100644
--- a/org.eclipse.jgit.test/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.test/META-INF/MANIFEST.MF
@@ -1,11 +1,11 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.test
 Bundle-SymbolicName: org.eclipse.jgit.test
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
+Bundle-Vendor: %Bundle-Vendor
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: com.googlecode.javaewah;version="[1.1.6,2.0.0)",
@@ -18,57 +18,57 @@
  org.apache.commons.compress.compressors.gzip;version="[1.15.0,2.0)",
  org.apache.commons.compress.compressors.xz;version="[1.15.0,2.0)",
  org.bouncycastle.util.encoders;version="[1.61.0,2.0.0)",
- org.eclipse.jgit.annotations;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.api;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.api.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.archive;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.attributes;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.awtui;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.blame;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.diff;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.dircache;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.events;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.fnmatch;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.gitrepo;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.hooks;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.ignore;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.ignore.internal;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.fsck;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.dfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.io;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.pack;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.reftable;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.storage.reftree;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.transport.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.internal.transport.parser;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit.ssh;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.junit.time;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lfs;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.merge;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.notes;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.patch;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.pgm;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.pgm.internal;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revplot;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.file;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.storage.pack;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.submodule;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.http;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport.resolver;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.treewalk.filter;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util.io;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util.sha1;version="[5.4.1,5.5.0)",
+ org.eclipse.jgit.annotations;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.api;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.api.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.archive;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.attributes;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.awtui;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.blame;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.diff;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.dircache;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.events;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.fnmatch;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.gitrepo;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.hooks;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.ignore;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.ignore.internal;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.fsck;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.dfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.io;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.pack;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.reftable;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.storage.reftree;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.transport.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.internal.transport.parser;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit.ssh;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.junit.time;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lfs;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.merge;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.notes;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.patch;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.pgm;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.pgm.internal;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revplot;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.file;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.storage.pack;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.submodule;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.http;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport.resolver;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.treewalk.filter;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util.io;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util.sha1;version="[5.5.0,5.6.0)",
  org.junit;version="[4.12,5.0.0)",
  org.junit.experimental.theories;version="[4.12,5.0.0)",
  org.junit.rules;version="[4.12,5.0.0)",
@@ -83,4 +83,4 @@
  org.tukaani.xz;version="[1.6.0,2.0)"
 Require-Bundle: org.hamcrest.core;bundle-version="[1.1.0,2.0.0)",
  org.hamcrest.library;bundle-version="[1.1.0,2.0.0)"
-Export-Package: org.eclipse.jgit.transport.ssh;version="5.4.1";x-friends:="org.eclipse.jgit.ssh.apache.test"
+Export-Package: org.eclipse.jgit.transport.ssh;version="5.5.0";x-friends:="org.eclipse.jgit.ssh.apache.test"
diff --git a/org.eclipse.jgit.test/plugin.properties b/org.eclipse.jgit.test/plugin.properties
index 1d32644..4e353cd 100644
--- a/org.eclipse.jgit.test/plugin.properties
+++ b/org.eclipse.jgit.test/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Core Tests
-provider_name=Eclipse JGit
+Bundle-Name=JGit Core Tests
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.test/pom.xml b/org.eclipse.jgit.test/pom.xml
index 19ce890..5e8a3e6 100644
--- a/org.eclipse.jgit.test/pom.xml
+++ b/org.eclipse.jgit.test/pom.xml
@@ -52,7 +52,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.test</artifactId>
@@ -101,7 +101,7 @@
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>2.13.0</version>
+      <version>2.23.0</version>
     </dependency>
 
     <dependency>
diff --git a/org.eclipse.jgit.test/src/org/eclipse/jgit/lib/MoreAsserts.java b/org.eclipse.jgit.test/src/org/eclipse/jgit/lib/MoreAsserts.java
new file mode 100644
index 0000000..5945e7e
--- /dev/null
+++ b/org.eclipse.jgit.test/src/org/eclipse/jgit/lib/MoreAsserts.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2019, Google LLC
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.lib;
+
+/** Assertion methods. */
+public class MoreAsserts {
+	/**
+	 * Simple version of assertThrows that will be introduced in JUnit 4.13.
+	 *
+	 * @param expected
+	 *            Expected throwable class
+	 * @param r
+	 *            Runnable that is expected to throw an exception.
+	 * @return The thrown exception.
+	 */
+	public static <T extends Throwable> T assertThrows(Class<T> expected,
+			ThrowingRunnable r) {
+		try {
+			r.run();
+		} catch (Throwable actual) {
+			if (expected.isAssignableFrom(actual.getClass())) {
+				@SuppressWarnings("unchecked")
+				T toReturn = (T) actual;
+				return toReturn;
+			}
+			throw new AssertionError("Expected " + expected.getSimpleName()
+					+ ", but got " + actual.getClass().getSimpleName(), actual);
+		}
+		throw new AssertionError(
+				"Expected " + expected.getSimpleName() + " to be thrown");
+	}
+
+	public interface ThrowingRunnable {
+		void run() throws Throwable;
+	}
+
+	private MoreAsserts() {
+	}
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/ResetCommandTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/ResetCommandTest.java
index dd7230b..563b32d 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/ResetCommandTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/ResetCommandTest.java
@@ -194,6 +194,42 @@
 	}
 
 	@Test
+	public void testHardResetWithConflicts_CreateFolder_UnstagedChanges() throws Exception {
+		setupRepository();
+
+		writeTrashFile("dir-or-file/c.txt", "content");
+		git.add().addFilepattern("dir-or-file/c.txt").call();
+		git.commit().setMessage("adding dir-or-file/c.txt").call();
+
+		FileUtils.delete(new File(db.getWorkTree(), "dir-or-file"), FileUtils.RECURSIVE);
+		writeTrashFile("dir-or-file", "content");
+
+		// bug 479266: cannot create folder "dir-or-file"
+		git.reset().setMode(ResetType.HARD).setRef(Constants.HEAD).call();
+		assertTrue(new File(db.getWorkTree(), "dir-or-file/c.txt").exists());
+	}
+
+	@Test
+	public void testHardResetWithConflicts_DeleteFolder_UnstagedChanges() throws Exception {
+		setupRepository();
+		ObjectId prevHead = db.resolve(Constants.HEAD);
+
+		writeTrashFile("dir-or-file/c.txt", "content");
+		git.add().addFilepattern("dir-or-file/c.txt").call();
+		git.commit().setMessage("adding dir-or-file/c.txt").call();
+
+		writeTrashFile("dir-or-file-2/d.txt", "content");
+		git.add().addFilepattern("dir-or-file-2/d.txt").call();
+		FileUtils.delete(new File(db.getWorkTree(), "dir-or-file-2"), FileUtils.RECURSIVE);
+		writeTrashFile("dir-or-file-2", "content");
+
+		// bug 479266: cannot delete folder "dir-or-file"
+		git.reset().setMode(ResetType.HARD).setRef(prevHead.getName()).call();
+		assertFalse(new File(db.getWorkTree(), "dir-or-file").exists());
+		assertFalse(new File(db.getWorkTree(), "dir-or-file-2").exists());
+	}
+
+	@Test
 	public void testResetToNonexistingHEAD() throws JGitInternalException,
 			AmbiguousObjectException, IOException, GitAPIException {
 
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/AlternatesTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/AlternatesTest.java
index b09db03..2306e0b 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/AlternatesTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/AlternatesTest.java
@@ -42,6 +42,7 @@
  */
 package org.eclipse.jgit.internal.storage.file;
 
+import static org.eclipse.jgit.lib.Constants.INFO_ALTERNATES;
 import static org.junit.Assert.assertTrue;
 
 import java.io.File;
@@ -76,7 +77,7 @@
 	private void setAlternate(FileRepository from, FileRepository to)
 			throws IOException {
 		File alt = new File(from.getObjectDatabase().getDirectory(),
-				"info/alternates");
+				INFO_ALTERNATES);
 		alt.getParentFile().mkdirs();
 		File fromDir = from.getObjectDatabase().getDirectory();
 		File toDir = to.getObjectDatabase().getDirectory();
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/PackWriterTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/PackWriterTest.java
index 5d0a7e2..1e2341b 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/PackWriterTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/PackWriterTest.java
@@ -44,6 +44,7 @@
 package org.eclipse.jgit.internal.storage.file;
 
 import static org.eclipse.jgit.internal.storage.pack.PackWriter.NONE;
+import static org.eclipse.jgit.lib.Constants.INFO_ALTERNATES;
 import static org.eclipse.jgit.lib.Constants.OBJ_BLOB;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -138,7 +139,7 @@
 		config = new PackConfig(db);
 
 		dst = createBareRepository();
-		File alt = new File(dst.getObjectDatabase().getDirectory(), "info/alternates");
+		File alt = new File(dst.getObjectDatabase().getDirectory(), INFO_ALTERNATES);
 		alt.getParentFile().mkdirs();
 		write(alt, db.getObjectDatabase().getDirectory().getAbsolutePath() + "\n");
 	}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java
index e2887d9..43f30d8 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/T0003_BasicTest.java
@@ -98,7 +98,7 @@
 	public void test001_Initalize() {
 		final File gitdir = new File(trash, Constants.DOT_GIT);
 		final File hooks = new File(gitdir, "hooks");
-		final File objects = new File(gitdir, "objects");
+		final File objects = new File(gitdir, Constants.OBJECTS);
 		final File objects_pack = new File(objects, "pack");
 		final File objects_info = new File(objects, "info");
 		final File refs = new File(gitdir, "refs");
@@ -150,7 +150,7 @@
 		assertEqualsPath(theDir, r.getDirectory());
 		assertEqualsPath(repo1Parent, r.getWorkTree());
 		assertEqualsPath(new File(theDir, "index"), r.getIndexFile());
-		assertEqualsPath(new File(theDir, "objects"), r.getObjectDatabase()
+		assertEqualsPath(new File(theDir, Constants.OBJECTS), r.getObjectDatabase()
 				.getDirectory());
 	}
 
@@ -176,7 +176,7 @@
 		assertEqualsPath(theDir, r.getDirectory());
 		assertEqualsPath(repo1Parent.getParentFile(), r.getWorkTree());
 		assertEqualsPath(new File(theDir, "index"), r.getIndexFile());
-		assertEqualsPath(new File(theDir, "objects"), r.getObjectDatabase()
+		assertEqualsPath(new File(theDir, Constants.OBJECTS), r.getObjectDatabase()
 				.getDirectory());
 	}
 
@@ -200,7 +200,7 @@
 		assertEqualsPath(theDir, r.getDirectory());
 		assertEqualsPath(repo1Parent, r.getWorkTree());
 		assertEqualsPath(new File(theDir, "index"), r.getIndexFile());
-		assertEqualsPath(new File(theDir, "objects"), r.getObjectDatabase()
+		assertEqualsPath(new File(theDir, Constants.OBJECTS), r.getObjectDatabase()
 				.getDirectory());
 	}
 
@@ -229,7 +229,7 @@
 		assertEqualsPath(theDir, r.getDirectory());
 		assertEqualsPath(workdir, r.getWorkTree());
 		assertEqualsPath(new File(theDir, "index"), r.getIndexFile());
-		assertEqualsPath(new File(theDir, "objects"), r.getObjectDatabase()
+		assertEqualsPath(new File(theDir, Constants.OBJECTS), r.getObjectDatabase()
 				.getDirectory());
 	}
 
@@ -258,7 +258,7 @@
 		assertEqualsPath(theDir, r.getDirectory());
 		assertEqualsPath(workdir, r.getWorkTree());
 		assertEqualsPath(new File(theDir, "index"), r.getIndexFile());
-		assertEqualsPath(new File(theDir, "objects"), r.getObjectDatabase()
+		assertEqualsPath(new File(theDir, Constants.OBJECTS), r.getObjectDatabase()
 				.getDirectory());
 	}
 
@@ -314,7 +314,7 @@
 		}
 
 		final File o = new File(new File(new File(newdb.getDirectory(),
-				"objects"), "4b"), "825dc642cb6eb9a060e54bf8d69288fbee4904");
+				Constants.OBJECTS), "4b"), "825dc642cb6eb9a060e54bf8d69288fbee4904");
 		assertTrue("Exists " + o, o.isFile());
 		assertTrue("Read-only " + o, !o.canWrite());
 	}
@@ -326,7 +326,7 @@
 		final ObjectId treeId = insertTree(new TreeFormatter());
 		assertEquals("4b825dc642cb6eb9a060e54bf8d69288fbee4904", treeId.name());
 		final File o = new File(new File(
-				new File(db.getDirectory(), "objects"), "4b"),
+				new File(db.getDirectory(), Constants.OBJECTS), "4b"),
 				"825dc642cb6eb9a060e54bf8d69288fbee4904");
 		assertFalse("Exists " + o, o.isFile());
 	}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/DirCacheCheckoutTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/DirCacheCheckoutTest.java
index 483051c..8092c31 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/DirCacheCheckoutTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/DirCacheCheckoutTest.java
@@ -1977,6 +1977,29 @@
 		}
 	}
 
+	@Test
+	public void testCheckoutWithEmptyIndexDoesntOverwrite() throws Exception {
+		try (Git git = new Git(db);
+				TestRepository<Repository> db_t = new TestRepository<>(db)) {
+			// prepare the commits
+			BranchBuilder master = db_t.branch("master");
+			RevCommit mergeCommit = master.commit()
+					.add("p/x", "headContent")
+					.message("m0").create();
+			master.commit().add("p/x", "headContent").message("m1").create();
+			git.checkout().setName("master").call();
+
+			// empty index and write unsaved data in 'p'
+			git.rm().addFilepattern("p").call();
+			writeTrashFile("p", "important data");
+
+			git.checkout().setName(mergeCommit.getName()).call();
+
+			assertEquals("", indexState(CONTENT));
+			assertEquals("important data", read("p"));
+		}
+	}
+
 	private static class TestFileTreeIterator extends FileTreeIterator {
 
 		// For assertions only
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/RebaseTodoFileTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/RebaseTodoFileTest.java
index 5cfc75c..3d3c697 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/RebaseTodoFileTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/RebaseTodoFileTest.java
@@ -68,7 +68,7 @@
 	@Test
 	public void testReadTodoFile() throws Exception {
 		String[] expected = { "reword " + ObjectId.zeroId().name() + " Foo",
-				"# A comment in the the todo list",
+				"# A comment in the todo list",
 				"pick " + ObjectId.zeroId().name() + " Foo fie",
 				"squash " + ObjectId.zeroId().name() + " F",
 				"fixup " + ObjectId.zeroId().name(),
@@ -93,7 +93,7 @@
 				assertEquals("Expected COMMENT", RebaseTodoLine.Action.COMMENT,
 						line.getAction());
 				assertEquals("Unexpected Message",
-						"# A comment in the the todo list",
+						"# A comment in the todo list",
 						line.getComment());
 				break;
 			case 2:
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/FirstParentRevWalkTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/FirstParentRevWalkTest.java
new file mode 100644
index 0000000..474ff7a
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/FirstParentRevWalkTest.java
@@ -0,0 +1,338 @@
+/*
+ * Copyright (C) 2019, Google LLC.
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.eclipse.jgit.revwalk;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import org.eclipse.jgit.revwalk.filter.MessageRevFilter;
+import org.eclipse.jgit.revwalk.filter.RevFilter;
+import org.junit.Test;
+
+public class FirstParentRevWalkTest extends RevWalkTestCase {
+	@Test
+	public void testStringOfPearls() throws Exception {
+		RevCommit a = commit();
+		RevCommit b = commit(a);
+		RevCommit c = commit(b);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(c);
+		assertCommit(c, rw.next());
+		assertCommit(b, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testSideBranch() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c1 = commit(b1);
+		RevCommit c2 = commit(b2);
+		RevCommit d = commit(c1, c2);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(d);
+		assertCommit(d, rw.next());
+		assertCommit(c1, rw.next());
+		assertCommit(b1, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testSecondParentAncestorOfFirstParent() throws Exception {
+		RevCommit a = commit();
+		RevCommit b = commit(a);
+		RevCommit c = commit(b, a);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(c);
+		assertCommit(c, rw.next());
+		assertCommit(b, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testFirstParentMultipleOccurrences() throws Exception {
+		RevCommit a = commit();
+		RevCommit b = commit(a);
+		RevCommit c = commit(b);
+		RevCommit d = commit(b);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(c);
+		markStart(d);
+		assertCommit(d, rw.next());
+		assertCommit(c, rw.next());
+		assertCommit(b, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testReachableAlongFirstAndLaterParents() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit b3 = commit(a);
+		RevCommit c = commit(b1, b2);
+		RevCommit d = commit(b2, b3);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(c);
+		markStart(d);
+		assertCommit(d, rw.next());
+		assertCommit(c, rw.next());
+		// b3 is only reachable from c's second parent.
+		// b2 is reachable from c's second parent but d's first parent.
+		assertCommit(b2, rw.next());
+		assertCommit(b1, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testStartCommitReachableOnlyFromLaterParents()
+			throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c = commit(b1, b2);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(c);
+		markStart(b2);
+		assertCommit(c, rw.next());
+		// b2 is only reachable from second parent, but is itself a start
+		// commit.
+		assertCommit(b2, rw.next());
+		assertCommit(b1, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testRevFilter() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commitBuilder().parent(a).message("commit b1").create();
+		RevCommit b2 = commitBuilder().parent(a).message("commit b2").create();
+		RevCommit c = commit(b1, b2);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		rw.setRevFilter(MessageRevFilter.create("commit b"));
+		rw.markStart(c);
+		assertCommit(b1, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testTopoSort() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c = commit(b1, b2);
+
+		rw.reset();
+		rw.sort(RevSort.TOPO);
+		rw.setFirstParent(true);
+		markStart(c);
+		assertCommit(c, rw.next());
+		assertCommit(b1, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testCommitTimeSort() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c = commit(b1, b2);
+
+		rw.reset();
+		rw.sort(RevSort.COMMIT_TIME_DESC);
+		rw.setFirstParent(true);
+		markStart(c);
+		assertCommit(c, rw.next());
+		assertCommit(b1, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testReverseSort() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c = commit(b1, b2);
+
+		rw.reset();
+		rw.sort(RevSort.REVERSE);
+		rw.setFirstParent(true);
+		markStart(c);
+		assertCommit(a, rw.next());
+		assertCommit(b1, rw.next());
+		assertCommit(c, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testBoundarySort() throws Exception {
+		RevCommit a = commit();
+		RevCommit b = commit(a);
+		RevCommit c1 = commit(b);
+		RevCommit c2 = commit(b);
+		RevCommit d = commit(c1, c2);
+
+		rw.reset();
+		rw.sort(RevSort.BOUNDARY);
+		rw.setFirstParent(true);
+		markStart(d);
+		markUninteresting(a);
+		assertCommit(d, rw.next());
+		assertCommit(c1, rw.next());
+		assertCommit(b, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testFirstParentOfFirstParentMarkedUninteresting()
+			throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c1 = commit(b1);
+		RevCommit c2 = commit(b2);
+		RevCommit d = commit(c1, c2);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(d);
+		markUninteresting(b1);
+		assertCommit(d, rw.next());
+		assertCommit(c1, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testFirstParentMarkedUninteresting() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c = commit(b1, b2);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		markStart(c);
+		markUninteresting(b1);
+		assertCommit(c, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test
+	public void testDepthWalk() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c = commit(b1, b2);
+
+		try (DepthWalk.RevWalk dw = new DepthWalk.RevWalk(db, 1)) {
+			dw.setFirstParent(true);
+			dw.markRoot(dw.parseCommit(c));
+			dw.markStart(dw.parseCommit(c));
+			assertEquals(c, dw.next());
+			assertEquals(b1, dw.next());
+			assertNull(dw.next());
+		}
+	}
+
+	@Test
+	public void testDoNotRewriteParents() throws Exception {
+		RevCommit a = commit();
+		RevCommit b1 = commit(a);
+		RevCommit b2 = commit(a);
+		RevCommit c = commit(b1, b2);
+
+		rw.reset();
+		rw.setFirstParent(true);
+		rw.setRewriteParents(false);
+		markStart(c);
+		assertCommit(c, rw.next());
+		assertCommit(b1, rw.next());
+		assertCommit(a, rw.next());
+		assertNull(rw.next());
+	}
+
+	@Test(expected = IllegalStateException.class)
+	public void testMarkStartBeforeSetFirstParent() throws Exception {
+		RevCommit a = commit();
+
+		rw.reset();
+		markStart(a);
+		rw.setFirstParent(true);
+	}
+
+	@Test(expected = IllegalStateException.class)
+	public void testMergeBaseWithFirstParentNotAllowed() throws Exception {
+		RevCommit a = commit();
+
+		rw.reset();
+		rw.setFirstParent(true);
+		rw.setRevFilter(RevFilter.MERGE_BASE);
+		markStart(a);
+		assertNull(rw.next());
+	}
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/PostUploadHookChainTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/PostUploadHookChainTest.java
new file mode 100644
index 0000000..ea7e8ed
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/PostUploadHookChainTest.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2019, Google LLC.
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.transport;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+
+import org.eclipse.jgit.storage.pack.PackStatistics;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public class PostUploadHookChainTest {
+
+	@Test
+	public void testDefaultIfEmpty() {
+		PostUploadHook[] noHooks = {};
+		PostUploadHook newChain = PostUploadHookChain
+				.newChain(Arrays.asList(noHooks));
+		assertEquals(newChain, PostUploadHook.NULL);
+	}
+
+	@Test
+	public void testFlattenChainIfOnlyOne() {
+		FakePostUploadHook hook1 = new FakePostUploadHook();
+		PostUploadHook newChain = PostUploadHookChain
+				.newChain(Arrays.asList(PostUploadHook.NULL, hook1));
+		assertEquals(newChain, hook1);
+	}
+
+	@Test
+	public void testMultipleHooks() {
+		FakePostUploadHook hook1 = new FakePostUploadHook();
+		FakePostUploadHook hook2 = new FakePostUploadHook();
+
+		PostUploadHook chained = PostUploadHookChain
+				.newChain(Arrays.asList(hook1, hook2));
+		chained.onPostUpload(null);
+
+		assertTrue(hook1.wasInvoked());
+		assertTrue(hook2.wasInvoked());
+	}
+
+	private static final class FakePostUploadHook implements PostUploadHook {
+		boolean invoked;
+
+		public boolean wasInvoked() {
+			return invoked;
+		}
+
+		@Override
+		public void onPostUpload(PackStatistics stats) {
+			invoked = true;
+		}
+	}
+}
\ No newline at end of file
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/PreUploadHookChainTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/PreUploadHookChainTest.java
new file mode 100644
index 0000000..2a36d8a
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/PreUploadHookChainTest.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2019, Google LLC.
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.transport;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import org.eclipse.jgit.lib.ObjectId;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public class PreUploadHookChainTest {
+
+	@Test
+	public void testDefaultIfEmpty() {
+		PreUploadHook[] noHooks = {};
+		PreUploadHook newChain = PreUploadHookChain
+				.newChain(Arrays.asList(noHooks));
+		assertEquals(newChain, PreUploadHook.NULL);
+	}
+
+	@Test
+	public void testFlattenChainIfOnlyOne() {
+		FakePreUploadHook hook1 = new FakePreUploadHook();
+		PreUploadHook newChain = PreUploadHookChain
+				.newChain(Arrays.asList(PreUploadHook.NULL, hook1));
+		assertEquals(newChain, hook1);
+	}
+
+	@Test
+	public void testMultipleHooks() throws ServiceMayNotContinueException {
+		FakePreUploadHook hook1 = new FakePreUploadHook();
+		FakePreUploadHook hook2 = new FakePreUploadHook();
+
+		PreUploadHook chained = PreUploadHookChain
+				.newChain(Arrays.asList(hook1, hook2));
+		chained.onBeginNegotiateRound(null, null, 0);
+
+		assertTrue(hook1.wasInvoked());
+		assertTrue(hook2.wasInvoked());
+	}
+
+	private static final class FakePreUploadHook implements PreUploadHook {
+		boolean invoked;
+
+		@Override
+		public void onBeginNegotiateRound(UploadPack up,
+				Collection<? extends ObjectId> wants, int cntOffered)
+				throws ServiceMayNotContinueException {
+			invoked = true;
+		}
+
+		@Override
+		public void onEndNegotiateRound(UploadPack up,
+				Collection<? extends ObjectId> wants, int cntCommon,
+				int cntNotFound, boolean ready)
+				throws ServiceMayNotContinueException {
+			throw new UnsupportedOperationException();
+		}
+
+		@Override
+		public void onSendPack(UploadPack up,
+				Collection<? extends ObjectId> wants,
+				Collection<? extends ObjectId> haves)
+				throws ServiceMayNotContinueException {
+			throw new UnsupportedOperationException();
+		}
+
+		public boolean wasInvoked() {
+			return invoked;
+		}
+	}
+}
\ No newline at end of file
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ProtocolV2HookChainTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ProtocolV2HookChainTest.java
new file mode 100644
index 0000000..8fb1ca8
--- /dev/null
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/ProtocolV2HookChainTest.java
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2019, Google LLC.
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.transport;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@RunWith(JUnit4.class)
+public class ProtocolV2HookChainTest {
+
+	@Test
+	public void testDefaultIfEmpty() {
+		ProtocolV2Hook[] noHooks = {};
+		ProtocolV2Hook newChain = ProtocolV2HookChain
+				.newChain(Arrays.asList(noHooks));
+		assertEquals(newChain, ProtocolV2Hook.DEFAULT);
+	}
+
+	@Test
+	public void testFlattenChainIfOnlyOne() {
+		FakeProtocolV2Hook hook1 = new FakeProtocolV2Hook();
+		ProtocolV2Hook newChain = ProtocolV2HookChain
+				.newChain(Arrays.asList(ProtocolV2Hook.DEFAULT, hook1));
+		assertEquals(newChain, hook1);
+	}
+
+	@Test
+	public void testMultipleHooks() throws ServiceMayNotContinueException {
+		FakeProtocolV2Hook hook1 = new FakeProtocolV2Hook();
+		FakeProtocolV2Hook hook2 = new FakeProtocolV2Hook();
+
+		ProtocolV2Hook chained = ProtocolV2HookChain
+				.newChain(Arrays.asList(hook1, hook2));
+		chained.onLsRefs(LsRefsV2Request.builder().build());
+
+		assertTrue(hook1.wasInvoked());
+		assertTrue(hook2.wasInvoked());
+	}
+
+	private static final class FakeProtocolV2Hook implements ProtocolV2Hook {
+		boolean invoked;
+
+		@Override
+		public void onLsRefs(LsRefsV2Request req)
+				throws ServiceMayNotContinueException {
+			invoked = true;
+		}
+
+		@Override
+		public void onCapabilities(CapabilitiesV2Request req)
+				throws ServiceMayNotContinueException {
+			throw new UnsupportedOperationException();
+		}
+
+		@Override
+		public void onFetch(FetchV2Request req)
+				throws ServiceMayNotContinueException {
+			throw new UnsupportedOperationException();
+		}
+
+		public boolean wasInvoked() {
+			return invoked;
+		}
+	}
+}
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/UploadPackTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/UploadPackTest.java
index 260130b..22c67c1 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/UploadPackTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/UploadPackTest.java
@@ -1,5 +1,7 @@
 package org.eclipse.jgit.transport;
 
+import static org.eclipse.jgit.lib.MoreAsserts.assertThrows;
+import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.hasItems;
 import static org.hamcrest.Matchers.is;
@@ -9,27 +11,30 @@
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.StringWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
+import java.util.function.Consumer;
 
 import org.eclipse.jgit.dircache.DirCache;
 import org.eclipse.jgit.dircache.DirCacheBuilder;
 import org.eclipse.jgit.dircache.DirCacheEntry;
-import org.eclipse.jgit.errors.PackProtocolException;
 import org.eclipse.jgit.errors.TransportException;
 import org.eclipse.jgit.internal.storage.dfs.DfsGarbageCollector;
 import org.eclipse.jgit.internal.storage.dfs.DfsRepositoryDescription;
 import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository;
+import org.eclipse.jgit.internal.storage.file.PackLock;
 import org.eclipse.jgit.junit.TestRepository;
 import org.eclipse.jgit.lib.NullProgressMonitor;
 import org.eclipse.jgit.lib.ObjectId;
@@ -47,25 +52,19 @@
 import org.eclipse.jgit.storage.pack.PackStatistics;
 import org.eclipse.jgit.transport.UploadPack.RequestPolicy;
 import org.eclipse.jgit.util.io.NullOutputStream;
-import org.hamcrest.Matchers;
 import org.junit.After;
 import org.junit.Before;
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.rules.ExpectedException;
 
 /**
  * Tests for server upload-pack utilities.
  */
 public class UploadPackTest {
-	@Rule
-	public ExpectedException thrown = ExpectedException.none();
-
 	private URIish uri;
 
 	private TestProtocol<Object> testProtocol;
 
-	private Object ctx = new Object();
+	private final Object ctx = new Object();
 
 	private InMemoryRepository server;
 
@@ -144,11 +143,11 @@
 		assertFalse(client.getObjectDatabase().has(blob.toObjectId()));
 
 		try (Transport tn = testProtocol.open(uri, client, "server")) {
-			thrown.expect(TransportException.class);
-			thrown.expectMessage(Matchers.containsString(
-						"want " + blob.name() + " not valid"));
-			tn.fetch(NullProgressMonitor.INSTANCE,
-					Collections.singletonList(new RefSpec(blob.name())));
+			TransportException e = assertThrows(TransportException.class,
+					() -> tn.fetch(NullProgressMonitor.INSTANCE, Collections
+							.singletonList(new RefSpec(blob.name()))));
+			assertThat(e.getMessage(),
+					containsString("want " + blob.name() + " not valid"));
 		}
 	}
 
@@ -183,11 +182,41 @@
 		assertFalse(client.getObjectDatabase().has(blob.toObjectId()));
 
 		try (Transport tn = testProtocol.open(uri, client, "server")) {
-			thrown.expect(TransportException.class);
-			thrown.expectMessage(Matchers.containsString(
+			TransportException e = assertThrows(TransportException.class,
+					() -> tn.fetch(NullProgressMonitor.INSTANCE, Collections
+							.singletonList(new RefSpec(blob.name()))));
+			assertThat(e.getMessage(),
+					containsString(
 						"want " + blob.name() + " not valid"));
-			tn.fetch(NullProgressMonitor.INSTANCE,
-					Collections.singletonList(new RefSpec(blob.name())));
+		}
+	}
+
+	@Test
+	public void testFetchReachableBlobWithoutBitmapButFilterAllowed() throws Exception {
+		InMemoryRepository server2 = newRepo("server2");
+		try (TestRepository<InMemoryRepository> remote2 = new TestRepository<>(
+				server2)) {
+			RevBlob blob = remote2.blob("foo");
+			RevCommit commit = remote2.commit(remote2.tree(remote2.file("foo", blob)));
+			remote2.update("master", commit);
+
+			server2.getConfig().setBoolean("uploadpack", null, "allowfilter",
+					true);
+
+			testProtocol = new TestProtocol<>((Object req, Repository db) -> {
+				UploadPack up = new UploadPack(db);
+				up.setRequestPolicy(RequestPolicy.REACHABLE_COMMIT);
+				return up;
+			}, null);
+			uri = testProtocol.register(ctx, server2);
+
+			assertFalse(client.getObjectDatabase().has(blob.toObjectId()));
+
+			try (Transport tn = testProtocol.open(uri, client, "server2")) {
+				tn.fetch(NullProgressMonitor.INSTANCE,
+						Collections.singletonList(new RefSpec(blob.name())));
+				assertTrue(client.getObjectDatabase().has(blob.toObjectId()));
+			}
 		}
 	}
 
@@ -384,12 +413,11 @@
 			try (Transport tn = testProtocol.open(uri, client, "server2")) {
 				tn.setFilterSpec(FilterSpec.withBlobLimit(0));
 
-				thrown.expect(TransportException.class);
-				thrown.expectMessage(
-						"filter requires server to advertise that capability");
-
-				tn.fetch(NullProgressMonitor.INSTANCE,
-						Collections.singletonList(new RefSpec(commit.name())));
+				TransportException e = assertThrows(TransportException.class,
+						() -> tn.fetch(NullProgressMonitor.INSTANCE, Collections
+								.singletonList(new RefSpec(commit.name()))));
+				assertThat(e.getMessage(), containsString(
+						"filter requires server to advertise that capability"));
 			}
 		}
 	}
@@ -398,22 +426,18 @@
 	 * Invokes UploadPack with protocol v2 and sends it the given lines,
 	 * and returns UploadPack's output stream.
 	 */
-	private ByteArrayInputStream uploadPackV2Setup(RequestPolicy requestPolicy,
-			RefFilter refFilter, ProtocolV2Hook hook, String... inputLines)
+	private ByteArrayInputStream uploadPackV2Setup(
+			Consumer<UploadPack> postConstructionSetup, String... inputLines)
 			throws Exception {
 
 		ByteArrayInputStream send = linesAsInputStream(inputLines);
 
 		server.getConfig().setString("protocol", null, "version", "2");
 		UploadPack up = new UploadPack(server);
-		if (requestPolicy != null)
-			up.setRequestPolicy(requestPolicy);
-		if (refFilter != null)
-			up.setRefFilter(refFilter);
-		up.setExtraParameters(Sets.of("version=2"));
-		if (hook != null) {
-			up.setProtocolV2Hook(hook);
+		if (postConstructionSetup != null) {
+			postConstructionSetup.accept(up);
 		}
+		up.setExtraParameters(Sets.of("version=2"));
 
 		ByteArrayOutputStream recv = new ByteArrayOutputStream();
 		up.upload(send, recv, null);
@@ -427,6 +451,7 @@
 		try (ByteArrayOutputStream send = new ByteArrayOutputStream()) {
 			PacketLineOut pckOut = new PacketLineOut(send);
 			for (String line : inputLines) {
+				Objects.requireNonNull(line);
 				if (PacketLineIn.isEnd(line)) {
 					pckOut.end();
 				} else if (PacketLineIn.isDelimiter(line)) {
@@ -444,11 +469,12 @@
 	 * Returns UploadPack's output stream, not including the capability
 	 * advertisement by the server.
 	 */
-	private ByteArrayInputStream uploadPackV2(RequestPolicy requestPolicy,
-			RefFilter refFilter, ProtocolV2Hook hook, String... inputLines)
+	private ByteArrayInputStream uploadPackV2(
+			Consumer<UploadPack> postConstructionSetup,
+			String... inputLines)
 			throws Exception {
 		ByteArrayInputStream recvStream =
-				uploadPackV2Setup(requestPolicy, refFilter, hook, inputLines);
+				uploadPackV2Setup(postConstructionSetup, inputLines);
 		PacketLineIn pckIn = new PacketLineIn(recvStream);
 
 		// drain capabilities
@@ -459,7 +485,7 @@
 	}
 
 	private ByteArrayInputStream uploadPackV2(String... inputLines) throws Exception {
-		return uploadPackV2(null, null, null, inputLines);
+		return uploadPackV2(null, inputLines);
 	}
 
 	private static class TestV2Hook implements ProtocolV2Hook {
@@ -488,8 +514,9 @@
 	@Test
 	public void testV2Capabilities() throws Exception {
 		TestV2Hook hook = new TestV2Hook();
-		ByteArrayInputStream recvStream =
-				uploadPackV2Setup(null, null, hook, PacketLineIn.end());
+		ByteArrayInputStream recvStream = uploadPackV2Setup(
+				(UploadPack up) -> {up.setProtocolV2Hook(hook);},
+				PacketLineIn.end());
 		PacketLineIn pckIn = new PacketLineIn(recvStream);
 		assertThat(hook.capabilitiesRequest, notNullValue());
 		assertThat(pckIn.readString(), is("version 2"));
@@ -506,54 +533,72 @@
 		assertTrue(PacketLineIn.isEnd(pckIn.readString()));
 	}
 
-	@Test
-	public void testV2CapabilitiesAllowFilter() throws Exception {
-		server.getConfig().setBoolean("uploadpack", null, "allowfilter", true);
+	private void checkAdvertisedIfAllowed(String configSection, String configName,
+			String fetchCapability) throws Exception {
+		server.getConfig().setBoolean(configSection, null, configName, true);
 		ByteArrayInputStream recvStream =
-				uploadPackV2Setup(null, null, null, PacketLineIn.end());
+				uploadPackV2Setup(null, PacketLineIn.end());
 		PacketLineIn pckIn = new PacketLineIn(recvStream);
 
 		assertThat(pckIn.readString(), is("version 2"));
-		assertThat(
-				Arrays.asList(pckIn.readString(), pckIn.readString(),
-						pckIn.readString()),
-				// TODO(jonathantanmy) This check overspecifies the
-				// order of the capabilities of "fetch".
-				hasItems("ls-refs", "fetch=filter shallow", "server-option"));
-		assertTrue(PacketLineIn.isEnd(pckIn.readString()));
+
+		ArrayList<String> lines = new ArrayList<>();
+		String line;
+		while (!PacketLineIn.isEnd((line = pckIn.readString()))) {
+			if (line.startsWith("fetch=")) {
+				assertThat(
+					Arrays.asList(line.substring(6).split(" ")),
+					containsInAnyOrder(fetchCapability, "shallow"));
+				lines.add("fetch");
+			} else {
+				lines.add(line);
+			}
+		}
+		assertThat(lines, containsInAnyOrder("ls-refs", "fetch", "server-option"));
+	}
+
+	private void checkUnadvertisedIfUnallowed(String fetchCapability) throws Exception {
+		ByteArrayInputStream recvStream =
+				uploadPackV2Setup(null, PacketLineIn.end());
+		PacketLineIn pckIn = new PacketLineIn(recvStream);
+
+		assertThat(pckIn.readString(), is("version 2"));
+
+		ArrayList<String> lines = new ArrayList<>();
+		String line;
+		while (!PacketLineIn.isEnd((line = pckIn.readString()))) {
+			if (line.startsWith("fetch=")) {
+				assertThat(
+					Arrays.asList(line.substring(6).split(" ")),
+					hasItems("shallow"));
+				lines.add("fetch");
+			} else {
+				lines.add(line);
+			}
+		}
+		assertThat(lines, hasItems("ls-refs", "fetch", "server-option"));
+	}
+
+	@Test
+	public void testV2CapabilitiesAllowFilter() throws Exception {
+		checkAdvertisedIfAllowed("uploadpack", "allowfilter", "filter");
+		checkUnadvertisedIfUnallowed("filter");
 	}
 
 	@Test
 	public void testV2CapabilitiesRefInWant() throws Exception {
-		server.getConfig().setBoolean("uploadpack", null, "allowrefinwant", true);
-		ByteArrayInputStream recvStream =
-				uploadPackV2Setup(null, null, null, PacketLineIn.end());
-		PacketLineIn pckIn = new PacketLineIn(recvStream);
-
-		assertThat(pckIn.readString(), is("version 2"));
-		assertThat(
-				Arrays.asList(pckIn.readString(), pckIn.readString(),
-						pckIn.readString()),
-				// TODO(jonathantanmy) This check overspecifies the
-				// order of the capabilities of "fetch".
-				hasItems("ls-refs", "fetch=ref-in-want shallow",
-						"server-option"));
-		assertTrue(PacketLineIn.isEnd(pckIn.readString()));
+		checkAdvertisedIfAllowed("uploadpack", "allowrefinwant", "ref-in-want");
 	}
 
 	@Test
 	public void testV2CapabilitiesRefInWantNotAdvertisedIfUnallowed() throws Exception {
-		server.getConfig().setBoolean("uploadpack", null, "allowrefinwant", false);
-		ByteArrayInputStream recvStream =
-				uploadPackV2Setup(null, null, null, PacketLineIn.end());
-		PacketLineIn pckIn = new PacketLineIn(recvStream);
+		checkUnadvertisedIfUnallowed("ref-in-want");
+	}
 
-		assertThat(pckIn.readString(), is("version 2"));
-		assertThat(
-				Arrays.asList(pckIn.readString(), pckIn.readString(),
-						pckIn.readString()),
-				hasItems("ls-refs", "fetch=shallow", "server-option"));
-		assertTrue(PacketLineIn.isEnd(pckIn.readString()));
+	@Test
+	public void testV2CapabilitiesAllowSidebandAll() throws Exception {
+		checkAdvertisedIfAllowed("uploadpack", "allowsidebandall", "sideband-all");
+		checkUnadvertisedIfUnallowed("sideband-all");
 	}
 
 	@Test
@@ -561,7 +606,7 @@
 		server.getConfig().setBoolean("uploadpack", null, "allowrefinwant", true);
 		server.getConfig().setBoolean("uploadpack", null, "advertiserefinwant", false);
 		ByteArrayInputStream recvStream =
-				uploadPackV2Setup(null, null, null, PacketLineIn.end());
+				uploadPackV2Setup(null, PacketLineIn.end());
 		PacketLineIn pckIn = new PacketLineIn(recvStream);
 
 		assertThat(pckIn.readString(), is("version 2"));
@@ -589,7 +634,8 @@
 		remote.update("refs/tags/tag", tag);
 
 		TestV2Hook hook = new TestV2Hook();
-		ByteArrayInputStream recvStream = uploadPackV2(null, null, hook,
+		ByteArrayInputStream recvStream = uploadPackV2(
+				(UploadPack up) -> {up.setProtocolV2Hook(hook);},
 				"command=ls-refs\n", PacketLineIn.end());
 		PacketLineIn pckIn = new PacketLineIn(recvStream);
 
@@ -707,13 +753,13 @@
 
 	@Test
 	public void testV2LsRefsUnrecognizedArgument() throws Exception {
-		thrown.expect(PackProtocolException.class);
-		thrown.expectMessage("unexpected invalid-argument");
-		uploadPackV2(
-			"command=ls-refs\n",
-			PacketLineIn.delimiter(),
-			"invalid-argument\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2("command=ls-refs\n",
+						PacketLineIn.delimiter(), "invalid-argument\n",
+						PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("unexpected invalid-argument"));
 	}
 
 	@Test
@@ -724,7 +770,7 @@
 				PacketLineIn.end() };
 
 		TestV2Hook testHook = new TestV2Hook();
-		uploadPackV2Setup(null, null, testHook, lines);
+		uploadPackV2Setup((UploadPack up) -> {up.setProtocolV2Hook(testHook);}, lines);
 
 		LsRefsV2Request req = testHook.lsRefsRequest;
 		assertEquals(2, req.getServerOptions().size());
@@ -761,118 +807,117 @@
 
 		// This works
 		uploadPackV2(
-			RequestPolicy.ADVERTISED,
-			null,
-			null,
+			(UploadPack up) -> {up.setRequestPolicy(RequestPolicy.ADVERTISED);},
 			"command=fetch\n",
 			PacketLineIn.delimiter(),
 			"want " + advertized.name() + "\n",
-				PacketLineIn.end());
+			PacketLineIn.end());
 
 		// This doesn't
-		thrown.expect(TransportException.class);
-		thrown.expectMessage(Matchers.containsString(
-					"want " + unadvertized.name() + " not valid"));
-		uploadPackV2(
-			RequestPolicy.ADVERTISED,
-			null,
-			null,
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"want " + unadvertized.name() + "\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2(
+						(UploadPack up) -> {up.setRequestPolicy(RequestPolicy.ADVERTISED);},
+						"command=fetch\n", PacketLineIn.delimiter(),
+						"want " + unadvertized.name() + "\n",
+						PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("want " + unadvertized.name() + " not valid"));
 	}
 
 	@Test
 	public void testV2FetchRequestPolicyReachableCommit() throws Exception {
 		RevCommit reachable = remote.commit().message("x").create();
-		RevCommit advertized = remote.commit().message("x").parent(reachable).create();
+		RevCommit advertized = remote.commit().message("x").parent(reachable)
+				.create();
 		RevCommit unreachable = remote.commit().message("y").create();
 		remote.update("branch1", advertized);
 
 		// This works
 		uploadPackV2(
-			RequestPolicy.REACHABLE_COMMIT,
-			null,
-			null,
+			(UploadPack up) -> {up.setRequestPolicy(RequestPolicy.REACHABLE_COMMIT);},
 			"command=fetch\n",
 			PacketLineIn.delimiter(),
 			"want " + reachable.name() + "\n",
 				PacketLineIn.end());
 
 		// This doesn't
-		thrown.expect(TransportException.class);
-		thrown.expectMessage(Matchers.containsString(
-					"want " + unreachable.name() + " not valid"));
-		uploadPackV2(
-			RequestPolicy.REACHABLE_COMMIT,
-			null,
-			null,
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"want " + unreachable.name() + "\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2(
+						(UploadPack up) -> {up.setRequestPolicy(RequestPolicy.REACHABLE_COMMIT);},
+						"command=fetch\n", PacketLineIn.delimiter(),
+						"want " + unreachable.name() + "\n",
+						PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("want " + unreachable.name() + " not valid"));
 	}
 
 	@Test
 	public void testV2FetchRequestPolicyTip() throws Exception {
 		RevCommit parentOfTip = remote.commit().message("x").create();
-		RevCommit tip = remote.commit().message("y").parent(parentOfTip).create();
+		RevCommit tip = remote.commit().message("y").parent(parentOfTip)
+				.create();
 		remote.update("secret", tip);
 
 		// This works
 		uploadPackV2(
-			RequestPolicy.TIP,
-			new RejectAllRefFilter(),
-			null,
+			(UploadPack up) -> {
+				up.setRequestPolicy(RequestPolicy.TIP);
+				up.setRefFilter(new RejectAllRefFilter());
+			},
 			"command=fetch\n",
 			PacketLineIn.delimiter(),
 			"want " + tip.name() + "\n",
 				PacketLineIn.end());
 
 		// This doesn't
-		thrown.expect(TransportException.class);
-		thrown.expectMessage(Matchers.containsString(
-					"want " + parentOfTip.name() + " not valid"));
-		uploadPackV2(
-			RequestPolicy.TIP,
-			new RejectAllRefFilter(),
-			null,
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"want " + parentOfTip.name() + "\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2(
+						(UploadPack up) -> {
+							up.setRequestPolicy(RequestPolicy.TIP);
+							up.setRefFilter(new RejectAllRefFilter());
+						},
+						"command=fetch\n", PacketLineIn.delimiter(),
+						"want " + parentOfTip.name() + "\n",
+						PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("want " + parentOfTip.name() + " not valid"));
 	}
 
 	@Test
 	public void testV2FetchRequestPolicyReachableCommitTip() throws Exception {
 		RevCommit parentOfTip = remote.commit().message("x").create();
-		RevCommit tip = remote.commit().message("y").parent(parentOfTip).create();
+		RevCommit tip = remote.commit().message("y").parent(parentOfTip)
+				.create();
 		RevCommit unreachable = remote.commit().message("y").create();
 		remote.update("secret", tip);
 
 		// This works
 		uploadPackV2(
-			RequestPolicy.REACHABLE_COMMIT_TIP,
-			new RejectAllRefFilter(),
-			null,
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"want " + parentOfTip.name() + "\n",
+				(UploadPack up) -> {
+					up.setRequestPolicy(RequestPolicy.REACHABLE_COMMIT_TIP);
+					up.setRefFilter(new RejectAllRefFilter());
+				},
+				"command=fetch\n",
+				PacketLineIn.delimiter(), "want " + parentOfTip.name() + "\n",
 				PacketLineIn.end());
 
 		// This doesn't
-		thrown.expect(TransportException.class);
-		thrown.expectMessage(Matchers.containsString(
-					"want " + unreachable.name() + " not valid"));
-		uploadPackV2(
-			RequestPolicy.REACHABLE_COMMIT_TIP,
-			new RejectAllRefFilter(),
-			null,
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"want " + unreachable.name() + "\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2(
+						(UploadPack up) -> {
+							up.setRequestPolicy(RequestPolicy.REACHABLE_COMMIT_TIP);
+							up.setRefFilter(new RejectAllRefFilter());
+						},
+						"command=fetch\n",
+						PacketLineIn.delimiter(),
+						"want " + unreachable.name() + "\n",
+						PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("want " + unreachable.name() + " not valid"));
 	}
 
 	@Test
@@ -881,9 +926,7 @@
 
 		// Exercise to make sure that even unreachable commits can be fetched
 		uploadPackV2(
-			RequestPolicy.ANY,
-			null,
-			null,
+			(UploadPack up) -> {up.setRequestPolicy(RequestPolicy.ANY);},
 			"command=fetch\n",
 			PacketLineIn.delimiter(),
 			"want " + unreachable.name() + "\n",
@@ -980,29 +1023,29 @@
 		String commonInBlob = "abcdefghijklmnopqrstuvwxyz";
 
 		RevBlob parentBlob = remote.blob(commonInBlob + "a");
-		RevCommit parent = remote.commit(remote.tree(remote.file("foo", parentBlob)));
+		RevCommit parent = remote
+				.commit(remote.tree(remote.file("foo", parentBlob)));
 		RevBlob childBlob = remote.blob(commonInBlob + "b");
-		RevCommit child = remote.commit(remote.tree(remote.file("foo", childBlob)), parent);
+		RevCommit child = remote
+				.commit(remote.tree(remote.file("foo", childBlob)), parent);
 		remote.update("branch1", child);
 
 		// Pretend that we have parent to get a thin pack based on it.
-		ByteArrayInputStream recvStream = uploadPackV2(
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"want " + child.toObjectId().getName() + "\n",
-			"have " + parent.toObjectId().getName() + "\n",
-			"thin-pack\n",
-			"done\n",
-				PacketLineIn.end());
+		ByteArrayInputStream recvStream = uploadPackV2("command=fetch\n",
+				PacketLineIn.delimiter(),
+				"want " + child.toObjectId().getName() + "\n",
+				"have " + parent.toObjectId().getName() + "\n", "thin-pack\n",
+				"done\n", PacketLineIn.end());
 		PacketLineIn pckIn = new PacketLineIn(recvStream);
 
 		assertThat(pckIn.readString(), is("packfile"));
 
 		// Verify that we received a thin pack by trying to apply it
 		// against the client repo, which does not have parent.
-		thrown.expect(IOException.class);
-		thrown.expectMessage("pack has unresolved deltas");
-		parsePack(recvStream);
+		IOException e = assertThrows(IOException.class,
+				() -> parsePack(recvStream));
+		assertThat(e.getMessage(),
+				containsString("pack has unresolved deltas"));
 	}
 
 	@Test
@@ -1303,19 +1346,18 @@
 		PersonIdent person = new PersonIdent(remote.getRepository());
 
 		RevCommit tooOld = remote.commit()
-			.committer(new PersonIdent(person, 1500000000, 0)).create();
+				.committer(new PersonIdent(person, 1500000000, 0)).create();
 
 		remote.update("branch1", tooOld);
 
-		thrown.expect(PackProtocolException.class);
-		thrown.expectMessage("No commits selected for shallow request");
-		uploadPackV2(
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"deepen-since 1510000\n",
-			"want " + tooOld.toObjectId().getName() + "\n",
-			"done\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2("command=fetch\n", PacketLineIn.delimiter(),
+						"deepen-since 1510000\n",
+						"want " + tooOld.toObjectId().getName() + "\n",
+						"done\n", PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("No commits selected for shallow request"));
 	}
 
 	@Test
@@ -1374,7 +1416,8 @@
 	}
 
 	@Test
-	public void testV2FetchDeepenNot_excludeDescendantOfWant() throws Exception {
+	public void testV2FetchDeepenNot_excludeDescendantOfWant()
+			throws Exception {
 		RevCommit one = remote.commit().message("one").create();
 		RevCommit two = remote.commit().message("two").parent(one).create();
 		RevCommit three = remote.commit().message("three").parent(two).create();
@@ -1383,15 +1426,14 @@
 		remote.update("two", two);
 		remote.update("four", four);
 
-		thrown.expect(PackProtocolException.class);
-		thrown.expectMessage("No commits selected for shallow request");
-		uploadPackV2(
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"deepen-not four\n",
-			"want " + two.toObjectId().getName() + "\n",
-			"done\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2("command=fetch\n", PacketLineIn.delimiter(),
+						"deepen-not four\n",
+						"want " + two.toObjectId().getName() + "\n", "done\n",
+						PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("No commits selected for shallow request"));
 	}
 
 	@Test
@@ -1469,13 +1511,12 @@
 
 	@Test
 	public void testV2FetchUnrecognizedArgument() throws Exception {
-		thrown.expect(PackProtocolException.class);
-		thrown.expectMessage("unexpected invalid-argument");
-		uploadPackV2(
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"invalid-argument\n",
-				PacketLineIn.end());
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2("command=fetch\n", PacketLineIn.delimiter(),
+						"invalid-argument\n", PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString("unexpected invalid-argument"));
 	}
 
 	@Test
@@ -1485,7 +1526,7 @@
 				PacketLineIn.end() };
 
 		TestV2Hook testHook = new TestV2Hook();
-		uploadPackV2Setup(null, null, testHook, lines);
+		uploadPackV2Setup((UploadPack up) -> {up.setProtocolV2Hook(testHook);}, lines);
 
 		FetchV2Request req = testHook.fetchRequest;
 		assertNotNull(req);
@@ -1569,8 +1610,9 @@
 		input.add("done\n");
 		input.add(PacketLineIn.end());
 		ByteArrayInputStream recvStream =
-				uploadPackV2(RequestPolicy.ANY, /*refFilter=*/null,
-							 /*hook=*/null, input.toArray(new String[0]));
+				uploadPackV2(
+						(UploadPack up) -> {up.setRequestPolicy(RequestPolicy.ANY);},
+						input.toArray(new String[0]));
 		PacketLineIn pckIn = new PacketLineIn(recvStream);
 		assertThat(pckIn.readString(), is("packfile"));
 		parsePack(recvStream);
@@ -1837,43 +1879,39 @@
 				.has(preparator.subtree3.toObjectId()));
 	}
 
-	@Test
-	public void testV2FetchFilterWhenNotAllowed() throws Exception {
+	private void checkV2FetchWhenNotAllowed(String fetchLine, String expectedMessage)
+			throws Exception {
 		RevCommit commit = remote.commit().message("0").create();
 		remote.update("master", commit);
 
-		server.getConfig().setBoolean("uploadpack", null, "allowfilter", false);
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2("command=fetch\n", PacketLineIn.delimiter(),
+						"want " + commit.toObjectId().getName() + "\n",
+						fetchLine, "done\n", PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
+				containsString(expectedMessage));
+	}
 
-		thrown.expect(PackProtocolException.class);
-		thrown.expectMessage("unexpected filter blob:limit=5");
-		uploadPackV2(
-			"command=fetch\n",
-			PacketLineIn.delimiter(),
-			"want " + commit.toObjectId().getName() + "\n",
+	@Test
+	public void testV2FetchFilterWhenNotAllowed() throws Exception {
+		checkV2FetchWhenNotAllowed(
 			"filter blob:limit=5\n",
-			"done\n",
-				PacketLineIn.end());
+			"unexpected filter blob:limit=5");
 	}
 
 	@Test
 	public void testV2FetchWantRefIfNotAllowed() throws Exception {
-		RevCommit one = remote.commit().message("1").create();
-		remote.update("one", one);
+		checkV2FetchWhenNotAllowed(
+			"want-ref refs/heads/one\n",
+			"unexpected want-ref refs/heads/one");
+	}
 
-		try {
-			uploadPackV2(
-				"command=fetch\n",
-				PacketLineIn.delimiter(),
-				"want-ref refs/heads/one\n",
-				"done\n",
-					PacketLineIn.end());
-		} catch (PackProtocolException e) {
-			assertThat(
-				e.getMessage(),
-				containsString("unexpected want-ref refs/heads/one"));
-			return;
-		}
-		fail("expected PackProtocolException");
+	@Test
+	public void testV2FetchSidebandAllIfNotAllowed() throws Exception {
+		checkV2FetchWhenNotAllowed(
+			"sideband-all\n",
+			"unexpected sideband-all");
 	}
 
 	@Test
@@ -1915,23 +1953,17 @@
 		RevCommit one = remote.commit().message("1").create();
 		remote.update("one", one);
 
-		server.getConfig().setBoolean("uploadpack", null, "allowrefinwant", true);
+		server.getConfig().setBoolean("uploadpack", null, "allowrefinwant",
+				true);
 
-		try {
-			uploadPackV2(
-				"command=fetch\n",
-				PacketLineIn.delimiter(),
-				"want-ref refs/heads/one\n",
-				"want-ref refs/heads/nonExistentRef\n",
-				"done\n",
-					PacketLineIn.end());
-		} catch (PackProtocolException e) {
-			assertThat(
-				e.getMessage(),
+		UploadPackInternalServerErrorException e = assertThrows(
+				UploadPackInternalServerErrorException.class,
+				() -> uploadPackV2("command=fetch\n", PacketLineIn.delimiter(),
+						"want-ref refs/heads/one\n",
+						"want-ref refs/heads/nonExistentRef\n", "done\n",
+						PacketLineIn.end()));
+		assertThat(e.getCause().getMessage(),
 				containsString("Invalid ref name: refs/heads/nonExistentRef"));
-			return;
-		}
-		fail("expected PackProtocolException");
 	}
 
 	@Test
@@ -2066,6 +2098,58 @@
 	}
 
 	@Test
+	public void testV2FetchSidebandAllNoPackfile() throws Exception {
+		RevCommit fooParent = remote.commit().message("x").create();
+		RevCommit fooChild = remote.commit().message("x").parent(fooParent).create();
+		RevCommit barParent = remote.commit().message("y").create();
+		RevCommit barChild = remote.commit().message("y").parent(barParent).create();
+		remote.update("branch1", fooChild);
+		remote.update("branch2", barChild);
+
+		server.getConfig().setBoolean("uploadpack", null, "allowsidebandall", true);
+
+		ByteArrayInputStream recvStream = uploadPackV2(
+			"command=fetch\n",
+			PacketLineIn.DELIM,
+			"sideband-all\n",
+			"want " + fooChild.toObjectId().getName() + "\n",
+			"want " + barChild.toObjectId().getName() + "\n",
+			"have " + fooParent.toObjectId().getName() + "\n",
+			PacketLineIn.END);
+		PacketLineIn pckIn = new PacketLineIn(recvStream);
+
+		assertThat(pckIn.readString(), is("\001acknowledgments"));
+		assertThat(pckIn.readString(), is("\001ACK " + fooParent.getName()));
+		assertTrue(PacketLineIn.isEnd(pckIn.readString()));
+	}
+
+	@Test
+	public void testV2FetchSidebandAllPackfile() throws Exception {
+		RevCommit commit = remote.commit().message("x").create();
+		remote.update("master", commit);
+
+		server.getConfig().setBoolean("uploadpack", null, "allowsidebandall", true);
+
+		ByteArrayInputStream recvStream = uploadPackV2("command=fetch\n",
+				PacketLineIn.DELIM,
+				"want " + commit.getName() + "\n",
+				"sideband-all\n",
+				"done\n",
+				PacketLineIn.END);
+		PacketLineIn pckIn = new PacketLineIn(recvStream);
+
+		String s;
+		// When sideband-all is used, object counting happens before
+		// "packfile" is written, and object counting outputs progress
+		// in sideband 2. Skip all these lines.
+		for (s = pckIn.readString(); s.startsWith("\002"); s = pckIn.readString()) {
+			// do nothing
+		}
+		assertThat(s, is("\001packfile"));
+		parsePack(recvStream);
+	}
+
+	@Test
 	public void testGetPeerAgentProtocolV0() throws Exception {
 		RevCommit one = remote.commit().message("1").create();
 		remote.update("one", one);
@@ -2110,4 +2194,84 @@
 			return new HashMap<>();
 		}
 	}
+
+	@Test
+	public void testSingleBranchCloneTagChain() throws Exception {
+		RevBlob blob0 = remote.blob("Initial content of first file");
+		RevBlob blob1 = remote.blob("Second file content");
+		RevCommit commit0 = remote
+				.commit(remote.tree(remote.file("prvni.txt", blob0)));
+		RevCommit commit1 = remote
+				.commit(remote.tree(remote.file("druhy.txt", blob1)), commit0);
+		remote.update("master", commit1);
+
+		RevTag heavyTag1 = remote.tag("commitTagRing", commit0);
+		remote.getRevWalk().parseHeaders(heavyTag1);
+		RevTag heavyTag2 = remote.tag("middleTagRing", heavyTag1);
+		remote.lightweightTag("refTagRing", heavyTag2);
+
+		UploadPack uploadPack = new UploadPack(remote.getRepository());
+
+		ByteArrayOutputStream cli = new ByteArrayOutputStream();
+		PacketLineOut clientWant = new PacketLineOut(cli);
+		clientWant.writeString("want " + commit1.name()
+				+ " multi_ack_detailed include-tag thin-pack ofs-delta agent=tempo/pflaska");
+		clientWant.end();
+		clientWant.writeString("done\n");
+
+		try (ByteArrayOutputStream serverResponse = new ByteArrayOutputStream()) {
+
+			uploadPack.setPreUploadHook(new PreUploadHook() {
+				@Override
+				public void onBeginNegotiateRound(UploadPack up,
+						Collection<? extends ObjectId> wants, int cntOffered)
+						throws ServiceMayNotContinueException {
+					// Do nothing.
+				}
+
+				@Override
+				public void onEndNegotiateRound(UploadPack up,
+						Collection<? extends ObjectId> wants, int cntCommon,
+						int cntNotFound, boolean ready)
+						throws ServiceMayNotContinueException {
+					// Do nothing.
+				}
+
+				@Override
+				public void onSendPack(UploadPack up,
+						Collection<? extends ObjectId> wants,
+						Collection<? extends ObjectId> haves)
+						throws ServiceMayNotContinueException {
+					// collect pack data
+					serverResponse.reset();
+				}
+			});
+			uploadPack.upload(new ByteArrayInputStream(cli.toByteArray()),
+					serverResponse, System.err);
+			InputStream packReceived = new ByteArrayInputStream(
+					serverResponse.toByteArray());
+			PackLock lock = null;
+			try (ObjectInserter ins = client.newObjectInserter()) {
+				PackParser parser = ins.newPackParser(packReceived);
+				parser.setAllowThin(true);
+				parser.setLockMessage("receive-tag-chain");
+				ProgressMonitor mlc = NullProgressMonitor.INSTANCE;
+				lock = parser.parse(mlc, mlc);
+				ins.flush();
+			} finally {
+				if (lock != null) {
+					lock.unlock();
+				}
+			}
+			InMemoryRepository.MemObjDatabase objDb = client
+					.getObjectDatabase();
+			assertTrue(objDb.has(blob0.toObjectId()));
+			assertTrue(objDb.has(blob1.toObjectId()));
+			assertTrue(objDb.has(commit0.toObjectId()));
+			assertTrue(objDb.has(commit1.toObjectId()));
+			assertTrue(objDb.has(heavyTag1.toObjectId()));
+			assertTrue(objDb.has(heavyTag2.toObjectId()));
+		}
+	}
+
 }
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/GitDateFormatterTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/GitDateFormatterTest.java
index d52166f..59ff2ad 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/GitDateFormatterTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/GitDateFormatterTest.java
@@ -44,6 +44,7 @@
 package org.eclipse.jgit.util;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 
 import org.eclipse.jgit.junit.MockSystemReader;
 import org.eclipse.jgit.lib.PersonIdent;
@@ -120,13 +121,16 @@
 
 	@Test
 	public void LOCALE() {
-		assertEquals("Sep 20, 2011 7:09:25 PM -0400", new GitDateFormatter(
-				Format.LOCALE).formatDate(ident));
+		String date = new GitDateFormatter(Format.LOCALE).formatDate(ident);
+		assertTrue("Sep 20, 2011 7:09:25 PM -0400".equals(date)
+				|| "Sep 20, 2011, 7:09:25 PM -0400".equals(date)); // JDK-8206961
 	}
 
 	@Test
 	public void LOCALELOCAL() {
-		assertEquals("Sep 20, 2011 7:39:25 PM", new GitDateFormatter(
-				Format.LOCALELOCAL).formatDate(ident));
+		String date = new GitDateFormatter(Format.LOCALELOCAL)
+				.formatDate(ident);
+		assertTrue("Sep 20, 2011 7:39:25 PM".equals(date)
+				|| "Sep 20, 2011, 7:39:25 PM".equals(date)); // JDK-8206961
 	}
 }
diff --git a/org.eclipse.jgit.ui/META-INF/MANIFEST.MF b/org.eclipse.jgit.ui/META-INF/MANIFEST.MF
index 531d287..1e0d052 100644
--- a/org.eclipse.jgit.ui/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit.ui/META-INF/MANIFEST.MF
@@ -1,17 +1,17 @@
 Bundle-Localization: plugin
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit.ui
 Bundle-SymbolicName: org.eclipse.jgit.ui
-Bundle-Version: 5.4.1.qualifier
-Bundle-Vendor: %provider_name
+Bundle-Version: 5.5.0.qualifier
+Bundle-Vendor: %Bundle-Vendor
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
-Export-Package: org.eclipse.jgit.awtui;version="5.4.1"
-Import-Package: org.eclipse.jgit.errors;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.lib;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.nls;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revplot;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.revwalk;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.transport;version="[5.4.1,5.5.0)",
- org.eclipse.jgit.util;version="[5.4.1,5.5.0)"
+Export-Package: org.eclipse.jgit.awtui;version="5.5.0"
+Import-Package: org.eclipse.jgit.errors;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.lib;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.nls;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revplot;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.revwalk;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.transport;version="[5.5.0,5.6.0)",
+ org.eclipse.jgit.util;version="[5.5.0,5.6.0)"
diff --git a/org.eclipse.jgit.ui/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit.ui/META-INF/SOURCE-MANIFEST.MF
index 2fdfc4e..f8818b3 100644
--- a/org.eclipse.jgit.ui/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit.ui/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit.ui - Sources
 Bundle-SymbolicName: org.eclipse.jgit.ui.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit.ui;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit.ui;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit.ui/plugin.properties b/org.eclipse.jgit.ui/plugin.properties
index 006c8c2..ce004ac 100644
--- a/org.eclipse.jgit.ui/plugin.properties
+++ b/org.eclipse.jgit.ui/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit AWT User Interface
-provider_name=Eclipse JGit
+Bundle-Name=JGit AWT User Interface
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit.ui/pom.xml b/org.eclipse.jgit.ui/pom.xml
index 990dfe4..6e9d3d5 100644
--- a/org.eclipse.jgit.ui/pom.xml
+++ b/org.eclipse.jgit.ui/pom.xml
@@ -52,7 +52,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit.ui</artifactId>
diff --git a/org.eclipse.jgit/.settings/.api_filters b/org.eclipse.jgit/.settings/.api_filters
index 2f6d2fa..3a5dd11 100644
--- a/org.eclipse.jgit/.settings/.api_filters
+++ b/org.eclipse.jgit/.settings/.api_filters
@@ -1,13 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <component id="org.eclipse.jgit" version="2">
-    <resource path="META-INF/MANIFEST.MF">
-        <filter id="924844039">
-            <message_arguments>
-                <message_argument value="5.4.1"/>
-                <message_argument value="5.4.0"/>
-            </message_arguments>
-        </filter>
-    </resource>
     <resource path="src/org/eclipse/jgit/dircache/DirCacheEntry.java" type="org.eclipse.jgit.dircache.DirCacheEntry">
         <filter id="1142947843">
             <message_arguments>
@@ -28,6 +20,15 @@
             </message_arguments>
         </filter>
     </resource>
+    <resource path="src/org/eclipse/jgit/lib/AnyObjectId.java" type="org.eclipse.jgit.lib.AnyObjectId">
+        <filter id="1141899266">
+            <message_arguments>
+                <message_argument value="5.4"/>
+                <message_argument value="5.5"/>
+                <message_argument value="isEqual(AnyObjectId, AnyObjectId)"/>
+            </message_arguments>
+        </filter>
+    </resource>
     <resource path="src/org/eclipse/jgit/lib/ConfigConstants.java" type="org.eclipse.jgit.lib.ConfigConstants">
         <filter id="1142947843">
             <message_arguments>
@@ -132,6 +133,15 @@
             </message_arguments>
         </filter>
     </resource>
+    <resource path="src/org/eclipse/jgit/util/References.java" type="org.eclipse.jgit.util.References">
+        <filter id="1108344834">
+            <message_arguments>
+                <message_argument value="5.4"/>
+                <message_argument value="5.5"/>
+                <message_argument value="org.eclipse.jgit.util.References"/>
+            </message_arguments>
+        </filter>
+    </resource>
     <resource path="src/org/eclipse/jgit/util/SimpleLruCache.java" type="org.eclipse.jgit.util.SimpleLruCache">
         <filter id="1109393411">
             <message_arguments>
diff --git a/org.eclipse.jgit/BUILD b/org.eclipse.jgit/BUILD
index b67bfac..814ecec 100644
--- a/org.eclipse.jgit/BUILD
+++ b/org.eclipse.jgit/BUILD
@@ -14,10 +14,6 @@
 java_library(
     name = "jgit",
     srcs = SRCS,
-    javacopts = select({
-        "//:jdk9": ["--add-modules=java.xml.bind"],
-        "//conditions:default": [],
-    }),
     resource_strip_prefix = "org.eclipse.jgit/resources",
     resources = RESOURCES,
     deps = [
diff --git a/org.eclipse.jgit/META-INF/MANIFEST.MF b/org.eclipse.jgit/META-INF/MANIFEST.MF
index 493cab4..4184a54 100644
--- a/org.eclipse.jgit/META-INF/MANIFEST.MF
+++ b/org.eclipse.jgit/META-INF/MANIFEST.MF
@@ -1,14 +1,14 @@
 Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
-Bundle-Name: %plugin_name
+Bundle-Name: %Bundle-Name
 Automatic-Module-Name: org.eclipse.jgit
 Bundle-SymbolicName: org.eclipse.jgit
-Bundle-Version: 5.4.1.qualifier
+Bundle-Version: 5.5.0.qualifier
 Bundle-Localization: plugin
-Bundle-Vendor: %provider_name
+Bundle-Vendor: %Bundle-Vendor
 Bundle-ActivationPolicy: lazy
-Export-Package: org.eclipse.jgit.annotations;version="5.4.1",
- org.eclipse.jgit.api;version="5.4.1";
+Export-Package: org.eclipse.jgit.annotations;version="5.5.0",
+ org.eclipse.jgit.api;version="5.5.0";
   uses:="org.eclipse.jgit.revwalk,
    org.eclipse.jgit.treewalk.filter,
    org.eclipse.jgit.diff,
@@ -22,53 +22,53 @@
    org.eclipse.jgit.submodule,
    org.eclipse.jgit.transport,
    org.eclipse.jgit.merge",
- org.eclipse.jgit.api.errors;version="5.4.1";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.errors",
- org.eclipse.jgit.attributes;version="5.4.1",
- org.eclipse.jgit.blame;version="5.4.1";
+ org.eclipse.jgit.api.errors;version="5.5.0";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.errors",
+ org.eclipse.jgit.attributes;version="5.5.0",
+ org.eclipse.jgit.blame;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.revwalk,
    org.eclipse.jgit.treewalk.filter,
    org.eclipse.jgit.diff",
- org.eclipse.jgit.diff;version="5.4.1";
+ org.eclipse.jgit.diff;version="5.5.0";
   uses:="org.eclipse.jgit.patch,
    org.eclipse.jgit.lib,
    org.eclipse.jgit.treewalk,
    org.eclipse.jgit.revwalk,
    org.eclipse.jgit.treewalk.filter,
    org.eclipse.jgit.util",
- org.eclipse.jgit.dircache;version="5.4.1";
+ org.eclipse.jgit.dircache;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.treewalk,
    org.eclipse.jgit.util,
    org.eclipse.jgit.events,
    org.eclipse.jgit.attributes",
- org.eclipse.jgit.errors;version="5.4.1";
+ org.eclipse.jgit.errors;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.internal.storage.pack,
    org.eclipse.jgit.transport,
    org.eclipse.jgit.dircache",
- org.eclipse.jgit.events;version="5.4.1";uses:="org.eclipse.jgit.lib",
- org.eclipse.jgit.fnmatch;version="5.4.1",
- org.eclipse.jgit.gitrepo;version="5.4.1";
+ org.eclipse.jgit.events;version="5.5.0";uses:="org.eclipse.jgit.lib",
+ org.eclipse.jgit.fnmatch;version="5.5.0",
+ org.eclipse.jgit.gitrepo;version="5.5.0";
   uses:="org.eclipse.jgit.api,
    org.eclipse.jgit.lib,
    org.eclipse.jgit.revwalk,
    org.xml.sax.helpers,
    org.xml.sax",
- org.eclipse.jgit.gitrepo.internal;version="5.4.1";x-internal:=true,
- org.eclipse.jgit.hooks;version="5.4.1";uses:="org.eclipse.jgit.lib",
- org.eclipse.jgit.ignore;version="5.4.1",
- org.eclipse.jgit.ignore.internal;version="5.4.1";x-friends:="org.eclipse.jgit.test",
- org.eclipse.jgit.internal;version="5.4.1";x-friends:="org.eclipse.jgit.test,org.eclipse.jgit.http.test",
- org.eclipse.jgit.internal.fsck;version="5.4.1";x-friends:="org.eclipse.jgit.test",
- org.eclipse.jgit.internal.ketch;version="5.4.1";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
- org.eclipse.jgit.internal.revwalk;version="5.4.1";x-internal:=true,
- org.eclipse.jgit.internal.storage.dfs;version="5.4.1";
+ org.eclipse.jgit.gitrepo.internal;version="5.5.0";x-internal:=true,
+ org.eclipse.jgit.hooks;version="5.5.0";uses:="org.eclipse.jgit.lib",
+ org.eclipse.jgit.ignore;version="5.5.0",
+ org.eclipse.jgit.ignore.internal;version="5.5.0";x-friends:="org.eclipse.jgit.test",
+ org.eclipse.jgit.internal;version="5.5.0";x-friends:="org.eclipse.jgit.test,org.eclipse.jgit.http.test",
+ org.eclipse.jgit.internal.fsck;version="5.5.0";x-friends:="org.eclipse.jgit.test",
+ org.eclipse.jgit.internal.ketch;version="5.5.0";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
+ org.eclipse.jgit.internal.revwalk;version="5.5.0";x-internal:=true,
+ org.eclipse.jgit.internal.storage.dfs;version="5.5.0";
   x-friends:="org.eclipse.jgit.test,
    org.eclipse.jgit.http.server,
    org.eclipse.jgit.http.test,
    org.eclipse.jgit.lfs.test",
- org.eclipse.jgit.internal.storage.file;version="5.4.1";
+ org.eclipse.jgit.internal.storage.file;version="5.5.0";
   x-friends:="org.eclipse.jgit.test,
    org.eclipse.jgit.junit,
    org.eclipse.jgit.junit.http,
@@ -77,19 +77,19 @@
    org.eclipse.jgit.pgm,
    org.eclipse.jgit.pgm.test,
    org.eclipse.jgit.ssh.apache",
- org.eclipse.jgit.internal.storage.io;version="5.4.1";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
- org.eclipse.jgit.internal.storage.pack;version="5.4.1";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
- org.eclipse.jgit.internal.storage.reftable;version="5.4.1";
+ org.eclipse.jgit.internal.storage.io;version="5.5.0";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
+ org.eclipse.jgit.internal.storage.pack;version="5.5.0";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
+ org.eclipse.jgit.internal.storage.reftable;version="5.5.0";
   x-friends:="org.eclipse.jgit.http.test,
    org.eclipse.jgit.junit,
    org.eclipse.jgit.test,
    org.eclipse.jgit.pgm",
- org.eclipse.jgit.internal.storage.reftree;version="5.4.1";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
- org.eclipse.jgit.internal.submodule;version="5.4.1";x-internal:=true,
- org.eclipse.jgit.internal.transport.http;version="5.4.1";x-friends:="org.eclipse.jgit.test",
- org.eclipse.jgit.internal.transport.parser;version="5.4.1";x-friends:="org.eclipse.jgit.http.server,org.eclipse.jgit.test",
- org.eclipse.jgit.internal.transport.ssh;version="5.4.1";x-friends:="org.eclipse.jgit.ssh.apache",
- org.eclipse.jgit.lib;version="5.4.1";
+ org.eclipse.jgit.internal.storage.reftree;version="5.5.0";x-friends:="org.eclipse.jgit.junit,org.eclipse.jgit.test,org.eclipse.jgit.pgm",
+ org.eclipse.jgit.internal.submodule;version="5.5.0";x-internal:=true,
+ org.eclipse.jgit.internal.transport.http;version="5.5.0";x-friends:="org.eclipse.jgit.test",
+ org.eclipse.jgit.internal.transport.parser;version="5.5.0";x-friends:="org.eclipse.jgit.http.server,org.eclipse.jgit.test",
+ org.eclipse.jgit.internal.transport.ssh;version="5.5.0";x-friends:="org.eclipse.jgit.ssh.apache",
+ org.eclipse.jgit.lib;version="5.5.0";
   uses:="org.eclipse.jgit.revwalk,
    org.eclipse.jgit.treewalk.filter,
    org.eclipse.jgit.util,
@@ -99,33 +99,33 @@
    org.eclipse.jgit.treewalk,
    org.eclipse.jgit.transport,
    org.eclipse.jgit.submodule",
- org.eclipse.jgit.lib.internal;version="5.4.1";x-internal:=true,
- org.eclipse.jgit.merge;version="5.4.1";
+ org.eclipse.jgit.lib.internal;version="5.5.0";x-internal:=true,
+ org.eclipse.jgit.merge;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.treewalk,
    org.eclipse.jgit.revwalk,
    org.eclipse.jgit.diff,
    org.eclipse.jgit.dircache,
    org.eclipse.jgit.api",
- org.eclipse.jgit.nls;version="5.4.1",
- org.eclipse.jgit.notes;version="5.4.1";
+ org.eclipse.jgit.nls;version="5.5.0",
+ org.eclipse.jgit.notes;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.treewalk,
    org.eclipse.jgit.revwalk,
    org.eclipse.jgit.merge",
- org.eclipse.jgit.patch;version="5.4.1";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.diff",
- org.eclipse.jgit.revplot;version="5.4.1";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.revwalk",
- org.eclipse.jgit.revwalk;version="5.4.1";
+ org.eclipse.jgit.patch;version="5.5.0";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.diff",
+ org.eclipse.jgit.revplot;version="5.5.0";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.revwalk",
+ org.eclipse.jgit.revwalk;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.treewalk,
    org.eclipse.jgit.treewalk.filter,
    org.eclipse.jgit.diff,
    org.eclipse.jgit.revwalk.filter",
- org.eclipse.jgit.revwalk.filter;version="5.4.1";uses:="org.eclipse.jgit.revwalk,org.eclipse.jgit.lib,org.eclipse.jgit.util",
- org.eclipse.jgit.storage.file;version="5.4.1";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.util",
- org.eclipse.jgit.storage.pack;version="5.4.1";uses:="org.eclipse.jgit.lib",
- org.eclipse.jgit.submodule;version="5.4.1";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.treewalk.filter,org.eclipse.jgit.treewalk",
- org.eclipse.jgit.transport;version="5.4.1";
+ org.eclipse.jgit.revwalk.filter;version="5.5.0";uses:="org.eclipse.jgit.revwalk,org.eclipse.jgit.lib,org.eclipse.jgit.util",
+ org.eclipse.jgit.storage.file;version="5.5.0";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.util",
+ org.eclipse.jgit.storage.pack;version="5.5.0";uses:="org.eclipse.jgit.lib",
+ org.eclipse.jgit.submodule;version="5.5.0";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.treewalk.filter,org.eclipse.jgit.treewalk",
+ org.eclipse.jgit.transport;version="5.5.0";
   uses:="org.eclipse.jgit.transport.resolver,
    org.eclipse.jgit.revwalk,
    org.eclipse.jgit.internal.storage.pack,
@@ -138,24 +138,24 @@
    org.eclipse.jgit.transport.http,
    org.eclipse.jgit.errors,
    org.eclipse.jgit.storage.pack",
- org.eclipse.jgit.transport.http;version="5.4.1";uses:="javax.net.ssl",
- org.eclipse.jgit.transport.resolver;version="5.4.1";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.transport",
- org.eclipse.jgit.treewalk;version="5.4.1";
+ org.eclipse.jgit.transport.http;version="5.5.0";uses:="javax.net.ssl",
+ org.eclipse.jgit.transport.resolver;version="5.5.0";uses:="org.eclipse.jgit.lib,org.eclipse.jgit.transport",
+ org.eclipse.jgit.treewalk;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.revwalk,
    org.eclipse.jgit.attributes,
    org.eclipse.jgit.treewalk.filter,
    org.eclipse.jgit.util,
    org.eclipse.jgit.dircache",
- org.eclipse.jgit.treewalk.filter;version="5.4.1";uses:="org.eclipse.jgit.treewalk",
- org.eclipse.jgit.util;version="5.4.1";
+ org.eclipse.jgit.treewalk.filter;version="5.5.0";uses:="org.eclipse.jgit.treewalk",
+ org.eclipse.jgit.util;version="5.5.0";
   uses:="org.eclipse.jgit.lib,
    org.eclipse.jgit.transport.http,
    org.eclipse.jgit.storage.file,
    org.ietf.jgss",
- org.eclipse.jgit.util.io;version="5.4.1",
- org.eclipse.jgit.util.sha1;version="5.4.1",
- org.eclipse.jgit.util.time;version="5.4.1"
+ org.eclipse.jgit.util.io;version="5.5.0",
+ org.eclipse.jgit.util.sha1;version="5.5.0",
+ org.eclipse.jgit.util.time;version="5.5.0"
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Import-Package: com.googlecode.javaewah;version="[1.1.6,2.0.0)",
  com.jcraft.jsch;version="[0.1.37,0.2.0)",
diff --git a/org.eclipse.jgit/META-INF/SOURCE-MANIFEST.MF b/org.eclipse.jgit/META-INF/SOURCE-MANIFEST.MF
index e21d207..780edcd 100644
--- a/org.eclipse.jgit/META-INF/SOURCE-MANIFEST.MF
+++ b/org.eclipse.jgit/META-INF/SOURCE-MANIFEST.MF
@@ -3,5 +3,5 @@
 Bundle-Name: org.eclipse.jgit - Sources
 Bundle-SymbolicName: org.eclipse.jgit.source
 Bundle-Vendor: Eclipse.org - JGit
-Bundle-Version: 5.4.1.qualifier
-Eclipse-SourceBundle: org.eclipse.jgit;version="5.4.1.qualifier";roots="."
+Bundle-Version: 5.5.0.qualifier
+Eclipse-SourceBundle: org.eclipse.jgit;version="5.5.0.qualifier";roots="."
diff --git a/org.eclipse.jgit/plugin.properties b/org.eclipse.jgit/plugin.properties
index 3ce6709..3e132b0 100644
--- a/org.eclipse.jgit/plugin.properties
+++ b/org.eclipse.jgit/plugin.properties
@@ -1,2 +1,2 @@
-plugin_name=JGit Core
-provider_name=Eclipse JGit
+Bundle-Name=JGit Core
+Bundle-Vendor=Eclipse JGit
diff --git a/org.eclipse.jgit/pom.xml b/org.eclipse.jgit/pom.xml
index 1856716..cd187bf 100644
--- a/org.eclipse.jgit/pom.xml
+++ b/org.eclipse.jgit/pom.xml
@@ -53,7 +53,7 @@
   <parent>
     <groupId>org.eclipse.jgit</groupId>
     <artifactId>org.eclipse.jgit-parent</artifactId>
-    <version>5.4.1-SNAPSHOT</version>
+    <version>5.5.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>org.eclipse.jgit</artifactId>
diff --git a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
index 34faf31..e26163e 100644
--- a/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
+++ b/org.eclipse.jgit/resources/org/eclipse/jgit/internal/JGitText.properties
@@ -77,6 +77,7 @@
 cannotEnterObjectsPath=Cannot enter {0}/objects: {1}
 cannotEnterPathFromParent=Cannot enter {0} from {1}: {2}
 cannotExecute=cannot execute: {0}
+cannotFindMergeBaseUsingFirstParent=Cannot find merge bases using a first-parent walk.
 cannotGet=Cannot get {0}
 cannotGetObjectsPath=Cannot get {0}/{1}: {2}
 cannotListObjectsPath=Cannot ls {0}/{1}: {2}
@@ -135,6 +136,7 @@
 commitMessageNotSpecified=commit message not specified
 commitOnRepoWithoutHEADCurrentlyNotSupported=Commit on repo without HEAD currently not supported
 commitAmendOnInitialNotPossible=Amending is not possible on initial commit.
+commitsHaveAlreadyBeenMarkedAsStart=Commits have already been marked as walk starts.
 compressingObjects=Compressing objects
 configSubsectionContainsNewline=config subsection name contains newline
 configSubsectionContainsNullByte=config subsection name contains byte 0x00
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/api/MergeCommand.java b/org.eclipse.jgit/src/org/eclipse/jgit/api/MergeCommand.java
index b8fa74d..f9a9baf 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/api/MergeCommand.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/api/MergeCommand.java
@@ -459,8 +459,8 @@
 	}
 
 	/**
-	 * Use values from the configuation if they have not been explicitly defined
-	 * via the setters
+	 * Use values from the configuration if they have not been explicitly
+	 * defined via the setters
 	 */
 	private void fallBackToConfiguration() {
 		MergeConfig config = MergeConfig.getConfigForCurrentBranch(repo);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheCheckout.java b/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheCheckout.java
index 22090f5..6bc2946 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheCheckout.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheCheckout.java
@@ -1301,14 +1301,6 @@
 						JGitText.get().cannotDeleteFile, c));
 			removeEmptyParents(conflict);
 		}
-		for (String r : removed) {
-			File file = new File(repo.getWorkTree(), r);
-			if (!file.delete())
-				throw new CheckoutConflictException(
-						MessageFormat.format(JGitText.get().cannotDeleteFile,
-								file.getAbsolutePath()));
-			removeEmptyParents(file);
-		}
 	}
 
 	/**
@@ -1473,6 +1465,9 @@
 		ObjectLoader ol = or.open(entry.getObjectId());
 		File f = new File(repo.getWorkTree(), entry.getPathString());
 		File parentDir = f.getParentFile();
+		if (parentDir.isFile()) {
+			FileUtils.delete(parentDir);
+		}
 		FileUtils.mkdirs(parentDir, true);
 		FS fs = repo.getFS();
 		WorkingTreeOptions opt = repo.getConfig().get(WorkingTreeOptions.KEY);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java
index 3791850..320036c 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/JGitText.java
@@ -138,6 +138,7 @@
 	/***/ public String cannotEnterObjectsPath;
 	/***/ public String cannotEnterPathFromParent;
 	/***/ public String cannotExecute;
+	/***/ public String cannotFindMergeBaseUsingFirstParent;
 	/***/ public String cannotGet;
 	/***/ public String cannotGetObjectsPath;
 	/***/ public String cannotListObjectsPath;
@@ -196,6 +197,7 @@
 	/***/ public String commitMessageNotSpecified;
 	/***/ public String commitOnRepoWithoutHEADCurrentlyNotSupported;
 	/***/ public String commitAmendOnInitialNotPossible;
+	/***/ public String commitsHaveAlreadyBeenMarkedAsStart;
 	/***/ public String compressingObjects;
 	/***/ public String configSubsectionContainsNewline;
 	/***/ public String configSubsectionContainsNullByte;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectory.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectory.java
index 258ccee..968ade6 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectory.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectory.java
@@ -171,7 +171,7 @@
 		infoDirectory = new File(objects, "info"); //$NON-NLS-1$
 		packDirectory = new File(objects, "pack"); //$NON-NLS-1$
 		preservedDirectory = new File(packDirectory, "preserved"); //$NON-NLS-1$
-		alternatesFile = new File(infoDirectory, "alternates"); //$NON-NLS-1$
+		alternatesFile = new File(objects, Constants.INFO_ALTERNATES);
 		packList = new AtomicReference<>(NO_PACKS);
 		unpackedObjectCache = new UnpackedObjectCache();
 		this.fs = fs;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/BaseRepositoryBuilder.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/BaseRepositoryBuilder.java
index d1cf1cd..96e5066 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/BaseRepositoryBuilder.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/BaseRepositoryBuilder.java
@@ -681,7 +681,7 @@
 	 */
 	protected void setupInternals() throws IOException {
 		if (getObjectDirectory() == null && getGitDir() != null)
-			setObjectDirectory(safeFS().resolve(getGitDir(), "objects")); //$NON-NLS-1$
+			setObjectDirectory(safeFS().resolve(getGitDir(), Constants.OBJECTS));
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java
index 8f4468e..a084c82 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java
@@ -275,9 +275,27 @@
 	/** Logs folder name */
 	public static final String LOGS = "logs";
 
+	/**
+	 * Objects folder name
+	 * @since 5.5
+	 */
+	public static final String OBJECTS = "objects";
+
 	/** Info refs folder */
 	public static final String INFO_REFS = "info/refs";
 
+	/**
+	 * Info alternates file (goes under OBJECTS)
+	 * @since 5.5
+	 */
+	public static final String INFO_ALTERNATES = "info/alternates";
+
+	/**
+	 * HTTP alternates file (goes under OBJECTS)
+	 * @since 5.5
+	 */
+	public static final String INFO_HTTP_ALTERNATES = "info/http-alternates";
+
 	/** Packed refs file */
 	public static final String PACKED_REFS = "packed-refs";
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/RepositoryCache.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/RepositoryCache.java
index 27befba..fa113bf 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/RepositoryCache.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/RepositoryCache.java
@@ -474,7 +474,7 @@
 		 *         Git directory.
 		 */
 		public static boolean isGitRepository(File dir, FS fs) {
-			return fs.resolve(dir, "objects").exists() //$NON-NLS-1$
+			return fs.resolve(dir, Constants.OBJECTS).exists()
 					&& fs.resolve(dir, "refs").exists() //$NON-NLS-1$
 					&& isValidHead(new File(dir, Constants.HEAD));
 		}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/AbstractRevQueue.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/AbstractRevQueue.java
index 247a3bd..7b5e6fa 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/AbstractRevQueue.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/AbstractRevQueue.java
@@ -49,6 +49,10 @@
 	/** Current output flags set for this generator instance. */
 	int outputType;
 
+	AbstractRevQueue(boolean firstParent) {
+		super(firstParent);
+	}
+
 	/**
 	 * Add a commit to the queue.
 	 * <p>
@@ -96,10 +100,15 @@
 	 */
 	public final void addParents(RevCommit c, RevFlag queueControl) {
 		final RevCommit[] pList = c.parents;
-		if (pList == null)
+		if (pList == null) {
 			return;
-		for (RevCommit p : pList)
-			add(p, queueControl);
+		}
+		for (int i = 0; i < pList.length; i++) {
+			if (firstParent && i > 0) {
+				break;
+			}
+			add(pList[i], queueControl);
+		}
 	}
 
 	/**
@@ -138,6 +147,10 @@
 	}
 
 	private static class AlwaysEmptyQueue extends AbstractRevQueue {
+		private AlwaysEmptyQueue() {
+			super(false);
+		}
+
 		@Override
 		public void add(RevCommit c) {
 			throw new UnsupportedOperationException();
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BlockRevQueue.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BlockRevQueue.java
index 79307b5..64e9e03 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BlockRevQueue.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BlockRevQueue.java
@@ -53,13 +53,19 @@
 
 	/**
 	 * Create an empty revision queue.
+	 *
+	 * @param firstParent
+	 *            whether only first-parent links should be followed when
+	 *            walking
 	 */
-	protected BlockRevQueue() {
+	protected BlockRevQueue(boolean firstParent) {
+		super(firstParent);
 		free = new BlockFreeList();
 	}
 
 	BlockRevQueue(Generator s) throws MissingObjectException,
 			IncorrectObjectTypeException, IOException {
+		super(s.firstParent);
 		free = new BlockFreeList();
 		outputType = s.outputType();
 		s.shareFreeList(this);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BoundaryGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BoundaryGenerator.java
index 0fd6621..98c99e8 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BoundaryGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/BoundaryGenerator.java
@@ -55,6 +55,7 @@
 	Generator g;
 
 	BoundaryGenerator(RevWalk w, Generator s) {
+		super(s.firstParent);
 		g = new InitialGenerator(w, s);
 	}
 
@@ -86,8 +87,9 @@
 		private final Generator source;
 
 		InitialGenerator(RevWalk w, Generator s) {
+			super(s.firstParent);
 			walk = w;
-			held = new FIFORevQueue();
+			held = new FIFORevQueue(firstParent);
 			source = s;
 			source.shareFreeList(held);
 		}
@@ -107,13 +109,19 @@
 				IncorrectObjectTypeException, IOException {
 			RevCommit c = source.next();
 			if (c != null) {
-				for (RevCommit p : c.parents)
-					if ((p.flags & UNINTERESTING) != 0)
+				for (int i = 0; i < c.parents.length; i++) {
+					if (firstParent && i > 0) {
+						break;
+					}
+					RevCommit p = c.parents[i];
+					if ((p.flags & UNINTERESTING) != 0) {
 						held.add(p);
+					}
+				}
 				return c;
 			}
 
-			final FIFORevQueue boundary = new FIFORevQueue();
+			final FIFORevQueue boundary = new FIFORevQueue(firstParent);
 			boundary.shareFreeList(held);
 			for (;;) {
 				c = held.next();
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DateRevQueue.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DateRevQueue.java
index b86e876..d77b055 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DateRevQueue.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DateRevQueue.java
@@ -69,15 +69,18 @@
 
 	private int last = -1;
 
-	/**
-	 * Create an empty date queue.
-	 */
+	/** Create an empty date queue. */
 	public DateRevQueue() {
-		super();
+		super(false);
+	}
+
+	DateRevQueue(boolean firstParent) {
+		super(firstParent);
 	}
 
 	DateRevQueue(Generator s) throws MissingObjectException,
 			IncorrectObjectTypeException, IOException {
+		super(s.firstParent);
 		for (;;) {
 			final RevCommit c = s.next();
 			if (c == null)
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DelayRevQueue.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DelayRevQueue.java
index c397a01..9134e08 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DelayRevQueue.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DelayRevQueue.java
@@ -70,6 +70,7 @@
 	private int size;
 
 	DelayRevQueue(Generator g) {
+		super(g.firstParent);
 		pending = g;
 		delay = new FIFORevQueue();
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DepthGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DepthGenerator.java
index 5199a29..0b04d5d 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DepthGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/DepthGenerator.java
@@ -95,7 +95,8 @@
 	 */
 	DepthGenerator(DepthWalk w, Generator s) throws MissingObjectException,
 			IncorrectObjectTypeException, IOException {
-		pending = new FIFORevQueue();
+		super(s.firstParent);
+		pending = new FIFORevQueue(firstParent);
 		walk = (RevWalk)w;
 
 		this.depth = w.getDepth();
@@ -196,7 +197,11 @@
 
 			int newDepth = c.depth + 1;
 
-			for (RevCommit p : c.parents) {
+			for (int i = 0; i < c.parents.length; i++) {
+				if (firstParent && i > 0) {
+					break;
+				}
+				RevCommit p = c.parents[i];
 				DepthWalk.Commit dp = (DepthWalk.Commit) p;
 
 				// If no depth has been assigned to this commit, assign
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/EndGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/EndGenerator.java
index 627e1c7..03916c8 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/EndGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/EndGenerator.java
@@ -47,7 +47,7 @@
 	static final EndGenerator INSTANCE = new EndGenerator();
 
 	private EndGenerator() {
-		// We have nothing to initialize.
+		super(false);
 	}
 
 	@Override
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FIFORevQueue.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FIFORevQueue.java
index cdb084c..40ee55c 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FIFORevQueue.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FIFORevQueue.java
@@ -56,11 +56,13 @@
 
 	private Block tail;
 
-	/**
-	 * Create an empty FIFO queue.
-	 */
+	/** Create an empty FIFO queue. */
 	public FIFORevQueue() {
-		super();
+		super(false);
+	}
+
+	FIFORevQueue(boolean firstParent) {
+		super(firstParent);
 	}
 
 	FIFORevQueue(Generator s) throws MissingObjectException,
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FixUninterestingGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FixUninterestingGenerator.java
index 4e6d7e6..289842a 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FixUninterestingGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/FixUninterestingGenerator.java
@@ -62,6 +62,7 @@
 	private final Generator pending;
 
 	FixUninterestingGenerator(Generator g) {
+		super(g.firstParent);
 		pending = g;
 	}
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/Generator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/Generator.java
index b2c92ea..59c5cce 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/Generator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/Generator.java
@@ -75,6 +75,12 @@
 	/** Output may have {@link RevWalk#UNINTERESTING} marked on it. */
 	static final int HAS_UNINTERESTING = 1 << 4;
 
+	protected final boolean firstParent;
+
+	protected Generator(boolean firstParent) {
+		this.firstParent = firstParent;
+	}
+
 	/**
 	 * Connect the supplied queue to this generator's own free list (if any).
 	 *
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/LIFORevQueue.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/LIFORevQueue.java
index 846b8d9..5628d35 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/LIFORevQueue.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/LIFORevQueue.java
@@ -59,7 +59,7 @@
 	 * Create an empty LIFO queue.
 	 */
 	public LIFORevQueue() {
-		super();
+		super(false);
 	}
 
 	LIFORevQueue(Generator s) throws MissingObjectException,
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/MergeBaseGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/MergeBaseGenerator.java
index 2fe9531..4ea57cb 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/MergeBaseGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/MergeBaseGenerator.java
@@ -85,8 +85,9 @@
 	private CarryStack stack;
 
 	MergeBaseGenerator(RevWalk w) {
+		super(w.isFirstParent());
 		walker = w;
-		pending = new DateRevQueue();
+		pending = new DateRevQueue(firstParent);
 	}
 
 	void init(AbstractRevQueue p) throws IOException {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/PendingGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/PendingGenerator.java
index e607b7d..52dd56d 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/PendingGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/PendingGenerator.java
@@ -109,6 +109,7 @@
 
 	PendingGenerator(final RevWalk w, final DateRevQueue p,
 			final RevFilter f, final int out) {
+		super(w.isFirstParent());
 		walker = w;
 		pending = p;
 		filter = f;
@@ -140,7 +141,11 @@
 					produce = filter.include(walker, c);
 				}
 
-				for (RevCommit p : c.parents) {
+				for (int i = 0; i < c.parents.length; i++) {
+					RevCommit p = c.parents[i];
+					if (firstParent && i > 0) {
+						continue;
+					}
 					if ((p.flags & SEEN) != 0)
 						continue;
 					if ((p.flags & PARSED) == 0)
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevWalk.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevWalk.java
index f50d189..4aa8325 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevWalk.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevWalk.java
@@ -201,6 +201,8 @@
 
 	private boolean rewriteParents = true;
 
+	private boolean firstParent;
+
 	boolean shallowCommitsInitialized;
 
 	/**
@@ -233,7 +235,7 @@
 		idBuffer = new MutableObjectId();
 		objects = new ObjectIdOwnerMap<>();
 		roots = new ArrayList<>();
-		queue = new DateRevQueue();
+		queue = new DateRevQueue(false);
 		pending = new StartGenerator(this);
 		sorting = EnumSet.of(RevSort.NONE);
 		filter = RevFilter.ALL;
@@ -664,6 +666,35 @@
 	}
 
 	/**
+	 * @return whether only first-parent links should be followed when walking.
+	 *
+	 * @since 5.5
+	 */
+	public boolean isFirstParent() {
+		return firstParent;
+	}
+
+	/**
+	 * Set whether or not only first parent links should be followed.
+	 * <p>
+	 * If set, second- and higher-parent links are not traversed at all.
+	 * <p>
+	 * This must be called prior to {@link #markStart(RevCommit)}.
+	 *
+	 * @param enable
+	 *            true to walk only first-parent links.
+	 *
+	 * @since 5.5
+	 */
+	public void setFirstParent(boolean enable) {
+		assertNotStarted();
+		assertNoCommitsMarkedStart();
+		firstParent = enable;
+		queue = new DateRevQueue(firstParent);
+		pending = new StartGenerator(this);
+	}
+
+	/**
 	 * Locate a reference to a blob without loading it.
 	 * <p>
 	 * The blob may or may not exist in the repository. It is impossible to tell
@@ -1295,7 +1326,8 @@
 	 * <p>
 	 * Unlike {@link #dispose()} previously acquired RevObject (and RevCommit)
 	 * instances are not invalidated. RevFlag instances are not invalidated, but
-	 * are removed from all RevObjects.
+	 * are removed from all RevObjects. The value of {@code firstParent} is
+	 * retained.
 	 *
 	 * @param retainFlags
 	 *            application flags that should <b>not</b> be cleared from
@@ -1331,7 +1363,7 @@
 		}
 
 		roots.clear();
-		queue = new DateRevQueue();
+		queue = new DateRevQueue(firstParent);
 		pending = new StartGenerator(this);
 	}
 
@@ -1349,9 +1381,10 @@
 		delayFreeFlags = 0;
 		retainOnReset = 0;
 		carryFlags = UNINTERESTING;
+		firstParent = false;
 		objects.clear();
 		roots.clear();
-		queue = new DateRevQueue();
+		queue = new DateRevQueue(firstParent);
 		pending = new StartGenerator(this);
 		shallowCommitsInitialized = false;
 	}
@@ -1423,6 +1456,21 @@
 		throw new IllegalStateException(JGitText.get().outputHasAlreadyBeenStarted);
 	}
 
+	/**
+	 * Throws an exception if any commits have been marked as start.
+	 * <p>
+	 * If {@link #markStart(RevCommit)} has already been called,
+	 * {@link #reset()} can be called to satisfy this condition.
+	 *
+	 * @since 5.5
+	 */
+	protected void assertNoCommitsMarkedStart() {
+		if (roots.isEmpty())
+			return;
+		throw new IllegalStateException(
+				JGitText.get().commitsHaveAlreadyBeenMarkedAsStart);
+	}
+
 	private boolean isNotStarted() {
 		return pending instanceof StartGenerator;
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RewriteGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RewriteGenerator.java
index 1c868ff..2e26641 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RewriteGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RewriteGenerator.java
@@ -77,6 +77,7 @@
 	private final Generator source;
 
 	RewriteGenerator(Generator s) {
+		super(s.firstParent);
 		source = s;
 	}
 
@@ -102,6 +103,10 @@
 		final int nParents = pList.length;
 		for (int i = 0; i < nParents; i++) {
 			final RevCommit oldp = pList[i];
+			if (firstParent && i > 0) {
+				c.parents = new RevCommit[] { rewrite(oldp) };
+				return c;
+			}
 			final RevCommit newp = rewrite(oldp);
 			if (oldp != newp) {
 				pList[i] = newp;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/StartGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/StartGenerator.java
index eb129a2..b309d6f 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/StartGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/StartGenerator.java
@@ -67,6 +67,7 @@
 	private final RevWalk walker;
 
 	StartGenerator(RevWalk w) {
+		super(w.isFirstParent());
 		walker = w;
 	}
 
@@ -89,9 +90,14 @@
 			// Computing for merge bases is a special case and does not
 			// use the bulk of the generator pipeline.
 			//
-			if (tf != TreeFilter.ALL)
+			if (tf != TreeFilter.ALL) {
 				throw new IllegalStateException(MessageFormat.format(
 						JGitText.get().cannotCombineTreeFilterWithRevFilter, tf, rf));
+			}
+			if (w.isFirstParent()) {
+				throw new IllegalStateException(
+						JGitText.get().cannotFindMergeBaseUsingFirstParent);
+			}
 
 			final MergeBaseGenerator mbg = new MergeBaseGenerator(w);
 			walker.pending = mbg;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TopoSortGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TopoSortGenerator.java
index 6450343..a2c9ef6 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TopoSortGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TopoSortGenerator.java
@@ -71,15 +71,21 @@
 	 */
 	TopoSortGenerator(Generator s) throws MissingObjectException,
 			IncorrectObjectTypeException, IOException {
-		pending = new FIFORevQueue();
+		super(s.firstParent);
+		pending = new FIFORevQueue(firstParent);
 		outputType = s.outputType() | SORT_TOPO;
 		s.shareFreeList(pending);
 		for (;;) {
 			final RevCommit c = s.next();
-			if (c == null)
+			if (c == null) {
 				break;
-			for (RevCommit p : c.parents)
-				p.inDegree++;
+			}
+			for (int i = 0; i < c.parents.length; i++) {
+				if (firstParent && i > 0) {
+					break;
+				}
+				c.parents[i].inDegree++;
+			}
 			pending.add(c);
 		}
 	}
@@ -113,7 +119,11 @@
 			// All of our children have already produced,
 			// so it is OK for us to produce now as well.
 			//
-			for (RevCommit p : c.parents) {
+			for (int i = 0; i < c.parents.length; i++) {
+				if (firstParent && i > 0) {
+					break;
+				}
+				RevCommit p = c.parents[i];
 				if (--p.inDegree == 0 && (p.flags & TOPO_DELAY) != 0) {
 					// This parent tried to come before us, but we are
 					// his last child. unpop the parent so it goes right
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TreeRevFilter.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TreeRevFilter.java
index 1130153..f7c3218 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TreeRevFilter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/TreeRevFilter.java
@@ -116,8 +116,7 @@
 	 * @param rewriteFlag
 	 *            flag to color commits to be removed from the simplified DAT.
 	 */
-	TreeRevFilter(final RevWalk walker, final TreeFilter t,
-			final int rewriteFlag) {
+	TreeRevFilter(RevWalk walker, TreeFilter t, int rewriteFlag) {
 		pathFilter = new TreeWalk(walker.reader);
 		pathFilter.setFilter(t);
 		pathFilter.setRecursive(t.shouldBeRecursive());
@@ -137,14 +136,15 @@
 			IncorrectObjectTypeException, IOException {
 		// Reset the tree filter to scan this commit and parents.
 		//
-		final RevCommit[] pList = c.parents;
-		final int nParents = pList.length;
-		final TreeWalk tw = pathFilter;
-		final ObjectId[] trees = new ObjectId[nParents + 1];
+		RevCommit[] pList = c.parents;
+		int nParents = pList.length;
+		TreeWalk tw = pathFilter;
+		ObjectId[] trees = new ObjectId[nParents + 1];
 		for (int i = 0; i < nParents; i++) {
-			final RevCommit p = c.parents[i];
-			if ((p.flags & PARSED) == 0)
+			RevCommit p = c.parents[i];
+			if ((p.flags & PARSED) == 0) {
 				p.parseHeaders(walker);
+			}
 			trees[i] = p.getTree();
 		}
 		trees[nParents] = c.getTree();
@@ -156,10 +156,11 @@
 			int chgs = 0, adds = 0;
 			while (tw.next()) {
 				chgs++;
-				if (tw.getRawMode(0) == 0 && tw.getRawMode(1) != 0)
+				if (tw.getRawMode(0) == 0 && tw.getRawMode(1) != 0) {
 					adds++;
-				else
+				} else {
 					break; // no point in looking at this further.
+				}
 			}
 
 			if (chgs == 0) {
@@ -185,8 +186,9 @@
 			// We have no parents to compare against. Consider us to be
 			// REWRITE only if we have no paths matching our filter.
 			//
-			if (tw.next())
+			if (tw.next()) {
 				return true;
+			}
 			c.flags |= rewriteFlag;
 			return false;
 		}
@@ -196,18 +198,19 @@
 		// it does not contribute changes to us. Such a parent may be an
 		// uninteresting side branch.
 		//
-		final int[] chgs = new int[nParents];
-		final int[] adds = new int[nParents];
+		int[] chgs = new int[nParents];
+		int[] adds = new int[nParents];
 		while (tw.next()) {
-			final int myMode = tw.getRawMode(nParents);
+			int myMode = tw.getRawMode(nParents);
 			for (int i = 0; i < nParents; i++) {
-				final int pMode = tw.getRawMode(i);
-				if (myMode == pMode && tw.idEqual(i, nParents))
+				int pMode = tw.getRawMode(i);
+				if (myMode == pMode && tw.idEqual(i, nParents)) {
 					continue;
-
+				}
 				chgs[i]++;
-				if (pMode == 0 && myMode != 0)
+				if (pMode == 0 && myMode != 0) {
 					adds[i]++;
+				}
 			}
 		}
 
@@ -220,7 +223,7 @@
 				// parent commit.
 				//
 
-				final RevCommit p = pList[i];
+				RevCommit p = pList[i];
 				if ((p.flags & UNINTERESTING) != 0) {
 					// This parent was marked as not interesting by the
 					// application. We should look for another parent
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BasePackFetchConnection.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BasePackFetchConnection.java
index 57d6bc2..27cc205 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BasePackFetchConnection.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BasePackFetchConnection.java
@@ -129,13 +129,13 @@
 	public static final String OPTION_INCLUDE_TAG = GitProtocolConstants.OPTION_INCLUDE_TAG;
 
 	/**
-	 * Mutli-ACK support for improved negotiation.
+	 * Multi-ACK support for improved negotiation.
 	 * @since 2.0
 	 */
 	public static final String OPTION_MULTI_ACK = GitProtocolConstants.OPTION_MULTI_ACK;
 
 	/**
-	 * Mutli-ACK detailed support for improved negotiation.
+	 * Multi-ACK detailed support for improved negotiation.
 	 * @since 2.0
 	 */
 	public static final String OPTION_MULTI_ACK_DETAILED = GitProtocolConstants.OPTION_MULTI_ACK_DETAILED;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/FetchV2Request.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/FetchV2Request.java
index 6c24269..86574c1 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/FetchV2Request.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/FetchV2Request.java
@@ -72,6 +72,8 @@
 	@NonNull
 	private final List<String> serverOptions;
 
+	private final boolean sidebandAll;
+
 	FetchV2Request(@NonNull List<ObjectId> peerHas,
 			@NonNull List<String> wantedRefs,
 			@NonNull Set<ObjectId> wantIds,
@@ -79,7 +81,8 @@
 			@NonNull List<String> deepenNotRefs, int depth,
 			@NonNull FilterSpec filterSpec,
 			boolean doneReceived, @NonNull Set<String> clientCapabilities,
-			@Nullable String agent, @NonNull List<String> serverOptions) {
+			@Nullable String agent, @NonNull List<String> serverOptions,
+			boolean sidebandAll) {
 		super(wantIds, depth, clientShallowCommits, filterSpec,
 				clientCapabilities, deepenSince,
 				deepenNotRefs, agent);
@@ -87,6 +90,7 @@
 		this.wantedRefs = requireNonNull(wantedRefs);
 		this.doneReceived = doneReceived;
 		this.serverOptions = requireNonNull(serverOptions);
+		this.sidebandAll = sidebandAll;
 	}
 
 	/**
@@ -127,6 +131,13 @@
 		return serverOptions;
 	}
 
+	/**
+	 * @return true if "sideband-all" was received
+	 */
+	boolean getSidebandAll() {
+		return sidebandAll;
+	}
+
 	/** @return A builder of {@link FetchV2Request}. */
 	static Builder builder() {
 		return new Builder();
@@ -159,6 +170,8 @@
 
 		final List<String> serverOptions = new ArrayList<>();
 
+		boolean sidebandAll;
+
 		private Builder() {
 		}
 
@@ -318,13 +331,23 @@
 		}
 
 		/**
+		 * @param value true if client sent "sideband-all"
+		 * @return this builder
+		 */
+		Builder setSidebandAll(boolean value) {
+			sidebandAll = value;
+			return this;
+		}
+
+		/**
 		 * @return Initialized fetch request
 		 */
 		FetchV2Request build() {
 			return new FetchV2Request(peerHas, wantedRefs, wantIds,
 					clientShallowCommits, deepenSince, deepenNotRefs,
 					depth, filterSpec, doneReceived, clientCapabilities,
-					agent, Collections.unmodifiableList(serverOptions));
+					agent, Collections.unmodifiableList(serverOptions),
+					sidebandAll);
 		}
 	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/GitProtocolConstants.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/GitProtocolConstants.java
index 1561c93..e3c0bc6 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/GitProtocolConstants.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/GitProtocolConstants.java
@@ -59,14 +59,14 @@
 	public static final String OPTION_INCLUDE_TAG = "include-tag"; //$NON-NLS-1$
 
 	/**
-	 * Mutli-ACK support for improved negotiation.
+	 * Multi-ACK support for improved negotiation.
 	 *
 	 * @since 3.2
 	 */
 	public static final String OPTION_MULTI_ACK = "multi_ack"; //$NON-NLS-1$
 
 	/**
-	 * Mutli-ACK detailed support for improved negotiation.
+	 * Multi-ACK detailed support for improved negotiation.
 	 *
 	 * @since 3.2
 	 */
@@ -174,6 +174,14 @@
 	public static final String OPTION_WANT_REF = "want-ref"; //$NON-NLS-1$
 
 	/**
+	 * The client requested that the whole response be multiplexed, with
+	 * each non-flush and non-delim pkt prefixed by a sideband designator.
+	 *
+	 * @since 5.5
+	 */
+	public static final String OPTION_SIDEBAND_ALL = "sideband-all"; //$NON-NLS-1$
+
+	/**
 	 * The client supports atomic pushes. If this option is used, the server
 	 * will update all refs within one atomic transaction.
 	 *
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java
index 0bdd6ba..79af1eb 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/JschConfigSessionFactory.java
@@ -551,7 +551,7 @@
 	 * @param config
 	 *            to use
 	 */
-	void setConfig(OpenSshConfig config) {
+	synchronized void setConfig(OpenSshConfig config) {
 		this.config = config;
 	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java
index e940091..7f837bb 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java
@@ -74,6 +74,8 @@
 
 	private boolean flushOnEnd;
 
+	private boolean usingSideband;
+
 	/**
 	 * Create a new packet line writer.
 	 *
@@ -98,6 +100,28 @@
 	}
 
 	/**
+	 * @return whether to add a sideband designator to each non-flush and
+	 *     non-delim packet
+	 * @see #setUsingSideband
+	 * @since 5.5
+	 */
+	public boolean isUsingSideband() {
+		return usingSideband;
+	}
+
+	/**
+	 * @param value If true, when writing packet lines, add, as the first
+	 *     byte, a sideband designator to each non-flush and non-delim
+	 *     packet. See pack-protocol.txt and protocol-v2.txt from the Git
+	 *     project for more information, specifically the "side-band" and
+	 *     "sideband-all" sections.
+	 * @since 5.5
+	 */
+	public void setUsingSideband(boolean value) {
+		this.usingSideband = value;
+	}
+
+	/**
 	 * Write a UTF-8 encoded string as a single length-delimited packet.
 	 *
 	 * @param s
@@ -139,8 +163,14 @@
 	 * @since 4.5
 	 */
 	public void writePacket(byte[] buf, int pos, int len) throws IOException {
-		formatLength(len + 4);
-		out.write(lenbuffer, 0, 4);
+		if (usingSideband) {
+			formatLength(len + 5);
+			out.write(lenbuffer, 0, 4);
+			out.write(1);
+		} else {
+			formatLength(len + 4);
+			out.write(lenbuffer, 0, 4);
+		}
 		out.write(buf, pos, len);
 		if (log.isDebugEnabled()) {
 			String s = RawParseUtils.decode(UTF_8, buf, pos, len);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PostUploadHookChain.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PostUploadHookChain.java
index 542abe7..4334888 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PostUploadHookChain.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PostUploadHookChain.java
@@ -42,7 +42,9 @@
 
 package org.eclipse.jgit.transport;
 
+import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import org.eclipse.jgit.storage.pack.PackStatistics;
 
@@ -55,8 +57,7 @@
  * @since 4.1
  */
 public class PostUploadHookChain implements PostUploadHook {
-	private final PostUploadHook[] hooks;
-	private final int count;
+	private final List<PostUploadHook> hooks;
 
 	/**
 	 * Create a new hook chaining the given hooks together.
@@ -65,29 +66,29 @@
 	 *            hooks to execute, in order.
 	 * @return a new chain of the given hooks.
 	 */
-	public static PostUploadHook newChain(List<? extends PostUploadHook> hooks) {
-		PostUploadHook[] newHooks = new PostUploadHook[hooks.size()];
-		int i = 0;
-		for (PostUploadHook hook : hooks)
-			if (hook != PostUploadHook.NULL)
-				newHooks[i++] = hook;
-		if (i == 0)
+	public static PostUploadHook newChain(List<PostUploadHook> hooks) {
+		List<PostUploadHook> newHooks = hooks.stream()
+				.filter(hook -> !hook.equals(PostUploadHook.NULL))
+				.collect(Collectors.toList());
+
+		if (newHooks.isEmpty()) {
 			return PostUploadHook.NULL;
-		else if (i == 1)
-			return newHooks[0];
-		else
-			return new PostUploadHookChain(newHooks, i);
+		} else if (newHooks.size() == 1) {
+			return newHooks.get(0);
+		} else {
+			return new PostUploadHookChain(newHooks);
+		}
 	}
 
 	/** {@inheritDoc} */
 	@Override
 	public void onPostUpload(PackStatistics stats) {
-		for (int i = 0; i < count; i++)
-			hooks[i].onPostUpload(stats);
+		for (PostUploadHook hook : hooks) {
+			hook.onPostUpload(stats);
+		}
 	}
 
-	private PostUploadHookChain(PostUploadHook[] hooks, int count) {
-		this.hooks = hooks;
-		this.count = count;
+	private PostUploadHookChain(List<PostUploadHook> hooks) {
+		this.hooks = Collections.unmodifiableList(hooks);
 	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PreUploadHookChain.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PreUploadHookChain.java
index bfd52af..2192654 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PreUploadHookChain.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PreUploadHookChain.java
@@ -44,7 +44,9 @@
 package org.eclipse.jgit.transport;
 
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import org.eclipse.jgit.lib.ObjectId;
 
@@ -56,8 +58,7 @@
  * one hook throws an exception, execution of remaining hook methods is aborted.
  */
 public class PreUploadHookChain implements PreUploadHook {
-	private final PreUploadHook[] hooks;
-	private final int count;
+	private final List<PreUploadHook> hooks;
 
 	/**
 	 * Create a new hook chaining the given hooks together.
@@ -66,18 +67,18 @@
 	 *            hooks to execute, in order.
 	 * @return a new hook chain of the given hooks.
 	 */
-	public static PreUploadHook newChain(List<? extends PreUploadHook> hooks) {
-		PreUploadHook[] newHooks = new PreUploadHook[hooks.size()];
-		int i = 0;
-		for (PreUploadHook hook : hooks)
-			if (hook != PreUploadHook.NULL)
-				newHooks[i++] = hook;
-		if (i == 0)
+	public static PreUploadHook newChain(List<PreUploadHook> hooks) {
+		List<PreUploadHook> newHooks = hooks.stream()
+				.filter(hook -> !hook.equals(PreUploadHook.NULL))
+				.collect(Collectors.toList());
+
+		if (newHooks.isEmpty()) {
 			return PreUploadHook.NULL;
-		else if (i == 1)
-			return newHooks[0];
-		else
-			return new PreUploadHookChain(newHooks, i);
+		} else if (newHooks.size() == 1) {
+			return newHooks.get(0);
+		} else {
+			return new PreUploadHookChain(newHooks);
+		}
 	}
 
 	/** {@inheritDoc} */
@@ -85,8 +86,9 @@
 	public void onBeginNegotiateRound(UploadPack up,
 			Collection<? extends ObjectId> wants, int cntOffered)
 			throws ServiceMayNotContinueException {
-		for (int i = 0; i < count; i++)
-			hooks[i].onBeginNegotiateRound(up, wants, cntOffered);
+		for (PreUploadHook hook : hooks) {
+			hook.onBeginNegotiateRound(up, wants, cntOffered);
+		}
 	}
 
 	/** {@inheritDoc} */
@@ -95,8 +97,9 @@
 			Collection<? extends ObjectId> wants, int cntCommon,
 			int cntNotFound, boolean ready)
 			throws ServiceMayNotContinueException {
-		for (int i = 0; i < count; i++)
-			hooks[i].onEndNegotiateRound(up, wants, cntCommon, cntNotFound, ready);
+		for (PreUploadHook hook : hooks) {
+			hook.onEndNegotiateRound(up, wants, cntCommon, cntNotFound, ready);
+		}
 	}
 
 	/** {@inheritDoc} */
@@ -105,12 +108,12 @@
 			Collection<? extends ObjectId> wants,
 			Collection<? extends ObjectId> haves)
 			throws ServiceMayNotContinueException {
-		for (int i = 0; i < count; i++)
-			hooks[i].onSendPack(up, wants, haves);
+		for (PreUploadHook hook : hooks) {
+			hook.onSendPack(up, wants, haves);
+		}
 	}
 
-	private PreUploadHookChain(PreUploadHook[] hooks, int count) {
-		this.hooks = hooks;
-		this.count = count;
+	private PreUploadHookChain(List<PreUploadHook> hooks) {
+		this.hooks = Collections.unmodifiableList(hooks);
 	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProtocolV2HookChain.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProtocolV2HookChain.java
new file mode 100644
index 0000000..cc36473
--- /dev/null
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProtocolV2HookChain.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2019, Google LLC.
+ * and other copyright owners as documented in the project's IP log.
+ *
+ * This program and the accompanying materials are made available
+ * under the terms of the Eclipse Distribution License v1.0 which
+ * accompanies this distribution, is reproduced below, and is
+ * available at http://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following
+ *   disclaimer in the documentation and/or other materials provided
+ *   with the distribution.
+ *
+ * - Neither the name of the Eclipse Foundation, Inc. nor the
+ *   names of its contributors may be used to endorse or promote
+ *   products derived from this software without specific prior
+ *   written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.eclipse.jgit.transport;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * {@link org.eclipse.jgit.transport.ProtocolV2Hook} that delegates to a list of
+ * other hooks.
+ * <p>
+ * Hooks are run in the order passed to the constructor. If running a method on
+ * one hook throws an exception, execution of remaining hook methods is aborted.
+ *
+ * @since 5.5
+ */
+public class ProtocolV2HookChain implements ProtocolV2Hook {
+	private final List<? extends ProtocolV2Hook> hooks;
+
+	/**
+	 * Create a new hook chaining the given hooks together.
+	 *
+	 * @param hooks
+	 *            hooks to execute, in order.
+	 * @return a new hook chain of the given hooks.
+	 */
+	public static ProtocolV2Hook newChain(
+			List<? extends ProtocolV2Hook> hooks) {
+		List<? extends ProtocolV2Hook> newHooks = hooks.stream()
+				.filter(hook -> !hook.equals(ProtocolV2Hook.DEFAULT))
+				.collect(Collectors.toList());
+
+		if (newHooks.isEmpty()) {
+			return ProtocolV2Hook.DEFAULT;
+		} else if (newHooks.size() == 1) {
+			return newHooks.get(0);
+		} else {
+			return new ProtocolV2HookChain(newHooks);
+		}
+	}
+
+	@Override
+	public void onCapabilities(CapabilitiesV2Request req)
+			throws ServiceMayNotContinueException {
+		for (ProtocolV2Hook hook : hooks) {
+			hook.onCapabilities(req);
+		}
+	}
+
+	@Override
+	public void onLsRefs(LsRefsV2Request req)
+			throws ServiceMayNotContinueException {
+		for (ProtocolV2Hook hook : hooks) {
+			hook.onLsRefs(req);
+		}
+	}
+
+	@Override
+	public void onFetch(FetchV2Request req)
+			throws ServiceMayNotContinueException {
+		for (ProtocolV2Hook hook : hooks) {
+			hook.onFetch(req);
+		}
+	}
+
+	private ProtocolV2HookChain(List<? extends ProtocolV2Hook> hooks) {
+		this.hooks = Collections.unmodifiableList(hooks);
+	}
+}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProtocolV2Parser.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProtocolV2Parser.java
index caba15f..453be7f 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProtocolV2Parser.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProtocolV2Parser.java
@@ -49,6 +49,7 @@
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_NO_PROGRESS;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_OFS_DELTA;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SERVER_OPTION;
+import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SIDEBAND_ALL;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SIDE_BAND_64K;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_THIN_PACK;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_WANT_REF;
@@ -210,6 +211,9 @@
 				filterReceived = true;
 				reqBuilder.setFilterSpec(FilterSpec.fromFilterLine(
 						line2.substring(OPTION_FILTER.length() + 1)));
+			} else if (transferConfig.isAllowSidebandAll()
+					&& line2.equals(OPTION_SIDEBAND_ALL)) {
+				reqBuilder.setSidebandAll(true);
 			} else {
 				throw new PackProtocolException(MessageFormat
 						.format(JGitText.get().unexpectedPacketLine, line2));
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransferConfig.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransferConfig.java
index a3e655c..758d74c 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransferConfig.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransferConfig.java
@@ -131,6 +131,7 @@
 	private final boolean allowTipSha1InWant;
 	private final boolean allowReachableSha1InWant;
 	private final boolean allowFilter;
+	private final boolean allowSidebandAll;
 	final @Nullable ProtocolVersion protocolVersion;
 	final String[] hideRefs;
 
@@ -210,6 +211,8 @@
 				"uploadpack", "allowfilter", false);
 		protocolVersion = ProtocolVersion.parse(rc.getString("protocol", null, "version"));
 		hideRefs = rc.getStringList("uploadpack", null, "hiderefs");
+		allowSidebandAll = rc.getBoolean(
+				"uploadpack", "allowsidebandall", false);
 	}
 
 	/**
@@ -292,6 +295,14 @@
 	}
 
 	/**
+	 * @return true if clients are allowed to specify a "sideband-all" line
+	 * @since 5.5
+	 */
+	public boolean isAllowSidebandAll() {
+		return allowSidebandAll;
+	}
+
+	/**
 	 * Get {@link org.eclipse.jgit.transport.RefFilter} respecting configured
 	 * hidden refs.
 	 *
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportAmazonS3.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportAmazonS3.java
index 6118cb8..c0a70bc 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportAmazonS3.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportAmazonS3.java
@@ -259,7 +259,7 @@
 		@Override
 		Collection<WalkRemoteObjectDatabase> getAlternates() throws IOException {
 			try {
-				return readAlternates(INFO_ALTERNATES);
+				return readAlternates(Constants.INFO_ALTERNATES);
 			} catch (FileNotFoundException err) {
 				// Fall through.
 			}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java
index 27ab879..d5b06c1 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java
@@ -48,6 +48,8 @@
 
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.lib.Constants.HEAD;
+import static org.eclipse.jgit.lib.Constants.INFO_ALTERNATES;
+import static org.eclipse.jgit.lib.Constants.INFO_HTTP_ALTERNATES;
 import static org.eclipse.jgit.util.HttpSupport.ENCODING_GZIP;
 import static org.eclipse.jgit.util.HttpSupport.ENCODING_X_GZIP;
 import static org.eclipse.jgit.util.HttpSupport.HDR_ACCEPT;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportSftp.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportSftp.java
index 5c68308..8d91c60 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportSftp.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportSftp.java
@@ -43,7 +43,9 @@
 
 package org.eclipse.jgit.transport;
 
+import static org.eclipse.jgit.lib.Constants.INFO_ALTERNATES;
 import static org.eclipse.jgit.lib.Constants.LOCK_SUFFIX;
+import static org.eclipse.jgit.lib.Constants.OBJECTS;
 
 import java.io.BufferedReader;
 import java.io.FileNotFoundException;
@@ -172,7 +174,7 @@
 			try {
 				ftp = newSftp();
 				ftp.cd(path);
-				ftp.cd("objects"); //$NON-NLS-1$
+				ftp.cd(OBJECTS);
 				objectsPath = ftp.pwd();
 			} catch (FtpChannel.FtpException f) {
 				throw new TransportException(MessageFormat.format(
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java
index 9278f42..2194f2f 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java
@@ -61,6 +61,7 @@
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_NO_PROGRESS;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_OFS_DELTA;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SHALLOW;
+import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SIDEBAND_ALL;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SIDE_BAND;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SIDE_BAND_64K;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_THIN_PACK;
@@ -113,6 +114,7 @@
 import org.eclipse.jgit.revwalk.RevFlag;
 import org.eclipse.jgit.revwalk.RevFlagSet;
 import org.eclipse.jgit.revwalk.RevObject;
+import org.eclipse.jgit.revwalk.RevSort;
 import org.eclipse.jgit.revwalk.RevTag;
 import org.eclipse.jgit.revwalk.RevWalk;
 import org.eclipse.jgit.revwalk.filter.CommitTimeRevFilter;
@@ -277,8 +279,6 @@
 
 	private PacketLineIn pckIn;
 
-	private PacketLineOut pckOut;
-
 	private OutputStream msgOut = NullOutputStream.INSTANCE;
 
 	/**
@@ -602,6 +602,18 @@
 	}
 
 	/**
+	 * Get the currently installed protocol v2 hook.
+	 *
+	 * @return the hook or a default implementation if none installed.
+	 *
+	 * @since 5.5
+	 */
+	public ProtocolV2Hook getProtocolV2Hook() {
+		return this.protocolV2Hook != null ? this.protocolV2Hook
+				: ProtocolV2Hook.DEFAULT;
+	}
+
+	/**
 	 * Set the filter used while advertising the refs to the client.
 	 * <p>
 	 * Only refs allowed by this filter will be sent to the client. The filter
@@ -750,8 +762,9 @@
 	 *            other network connections this should be null.
 	 * @throws java.io.IOException
 	 */
-	public void upload(final InputStream input, OutputStream output,
-			final OutputStream messages) throws IOException {
+	public void upload(InputStream input, OutputStream output,
+			@Nullable OutputStream messages) throws IOException {
+		PacketLineOut pckOut = null;
 		try {
 			rawIn = input;
 			if (messages != null)
@@ -777,10 +790,40 @@
 			pckIn = new PacketLineIn(rawIn);
 			pckOut = new PacketLineOut(rawOut);
 			if (useProtocolV2()) {
-				serviceV2();
+				serviceV2(pckOut);
 			} else {
-				service();
+				service(pckOut);
 			}
+		} catch (UploadPackInternalServerErrorException err) {
+			// UploadPackInternalServerErrorException is a special exception
+			// that indicates an error is already written to the client. Do
+			// nothing.
+			throw err;
+		} catch (ServiceMayNotContinueException err) {
+			if (!err.isOutput() && err.getMessage() != null && pckOut != null) {
+				try {
+					pckOut.writeString("ERR " + err.getMessage() + "\n"); //$NON-NLS-1$ //$NON-NLS-2$
+				} catch (IOException e) {
+					err.addSuppressed(e);
+					throw err;
+				}
+				err.setOutput();
+			}
+			throw err;
+		} catch (IOException | RuntimeException | Error err) {
+			if (pckOut != null) {
+				String msg = err instanceof PackProtocolException
+						? err.getMessage()
+						: JGitText.get().internalServerError;
+				try {
+					pckOut.writeString("ERR " + msg + "\n"); //$NON-NLS-1$ //$NON-NLS-2$
+				} catch (IOException e) {
+					err.addSuppressed(e);
+					throw err;
+				}
+				throw new UploadPackInternalServerErrorException(err);
+			}
+			throw err;
 		} finally {
 			msgOut = NullOutputStream.INSTANCE;
 			walk.close();
@@ -941,7 +984,7 @@
 		return RefDatabase.findRef(getAdvertisedOrDefaultRefs(), name);
 	}
 
-	private void service() throws IOException {
+	private void service(PacketLineOut pckOut) throws IOException {
 		boolean sendPack = false;
 		// If it's a non-bidi request, we need to read the entire request before
 		// writing a response. Buffer the response until then.
@@ -997,7 +1040,7 @@
 
 			if (!req.getClientShallowCommits().isEmpty())
 				walk.assumeShallow(req.getClientShallowCommits());
-			sendPack = negotiate(req, accumulator);
+			sendPack = negotiate(req, accumulator, pckOut);
 			accumulator.timeNegotiating += System.currentTimeMillis()
 					- negotiateStart;
 
@@ -1012,31 +1055,6 @@
 							"\\x" + Integer.toHexString(eof))); //$NON-NLS-1$
 				}
 			}
-		} catch (ServiceMayNotContinueException err) {
-			if (!err.isOutput() && err.getMessage() != null) {
-				try {
-					pckOut.writeString("ERR " + err.getMessage() + "\n"); //$NON-NLS-1$ //$NON-NLS-2$
-					err.setOutput();
-				} catch (Throwable err2) {
-					// Ignore this secondary failure (and not mark output).
-				}
-			}
-			throw err;
-		} catch (IOException | RuntimeException | Error err) {
-			boolean output = false;
-			try {
-				String msg = err instanceof PackProtocolException
-						? err.getMessage()
-						: JGitText.get().internalServerError;
-				pckOut.writeString("ERR " + msg + "\n"); //$NON-NLS-1$ //$NON-NLS-2$
-				output = true;
-			} catch (Throwable err2) {
-				// Ignore this secondary failure, leave output false.
-			}
-			if (output) {
-				throw new UploadPackInternalServerErrorException(err);
-			}
-			throw err;
 		} finally {
 			if (!sendPack && !biDirectionalPipe) {
 				while (0 < rawIn.skip(2048) || 0 <= rawIn.read()) {
@@ -1048,11 +1066,11 @@
 
 		if (sendPack) {
 			sendPack(accumulator, req, refs == null ? null : refs.values(),
-					unshallowCommits, Collections.emptyList());
+					unshallowCommits, Collections.emptyList(), pckOut);
 		}
 	}
 
-	private void lsRefsV2() throws IOException {
+	private void lsRefsV2(PacketLineOut pckOut) throws IOException {
 		ProtocolV2Parser parser = new ProtocolV2Parser(transferConfig);
 		LsRefsV2Request req = parser.parseLsRefsRequest(pckIn);
 		protocolV2Hook.onLsRefs(req);
@@ -1097,7 +1115,7 @@
 		return result;
 	}
 
-	private void fetchV2() throws IOException {
+	private void fetchV2(PacketLineOut pckOut) throws IOException {
 		// Depending on the requestValidator, #processHaveLines may
 		// require that advertised be set. Set it only in the required
 		// circumstances (to avoid a full ref lookup in the case that
@@ -1117,6 +1135,10 @@
 
 		protocolV2Hook.onFetch(req);
 
+		if (req.getSidebandAll()) {
+			pckOut.setUsingSideband(true);
+		}
+
 		// TODO(ifrade): Refactor to pass around the Request object, instead of
 		// copying data back to class fields
 		List<ObjectId> deepenNots = new ArrayList<>();
@@ -1202,13 +1224,17 @@
 
 			if (sectionSent)
 				pckOut.writeDelim();
-			pckOut.writeString("packfile\n"); //$NON-NLS-1$
+			if (!pckOut.isUsingSideband()) {
+				// sendPack will write "packfile\n" for us if sideband-all is used.
+				// But sideband-all is not used, so we have to write it ourselves.
+				pckOut.writeString("packfile\n"); //$NON-NLS-1$
+			}
 			sendPack(new PackStatistics.Accumulator(),
 					req,
 					req.getClientCapabilities().contains(OPTION_INCLUDE_TAG)
 						? db.getRefDatabase().getRefsByPrefix(R_TAGS)
 						: null,
-					unshallowCommits, deepenNots);
+					unshallowCommits, deepenNots, pckOut);
 			// sendPack invokes pckOut.end() for us, so we do not
 			// need to invoke it here.
 		} else {
@@ -1221,7 +1247,7 @@
 	 * Returns true if this is the last command and we should tear down the
 	 * connection.
 	 */
-	private boolean serveOneCommandV2() throws IOException {
+	private boolean serveOneCommandV2(PacketLineOut pckOut) throws IOException {
 		String command;
 		try {
 			command = pckIn.readString();
@@ -1236,11 +1262,11 @@
 			return true;
 		}
 		if (command.equals("command=" + COMMAND_LS_REFS)) { //$NON-NLS-1$
-			lsRefsV2();
+			lsRefsV2(pckOut);
 			return false;
 		}
 		if (command.equals("command=" + COMMAND_FETCH)) { //$NON-NLS-1$
-			fetchV2();
+			fetchV2(pckOut);
 			return false;
 		}
 		throw new PackProtocolException(MessageFormat
@@ -1258,12 +1284,13 @@
 				COMMAND_FETCH + '=' +
 				(transferConfig.isAllowFilter() ? OPTION_FILTER + ' ' : "") + //$NON-NLS-1$
 				(advertiseRefInWant ? CAPABILITY_REF_IN_WANT + ' ' : "") + //$NON-NLS-1$
+				(transferConfig.isAllowSidebandAll() ? OPTION_SIDEBAND_ALL + ' ' : "") + //$NON-NLS-1$
 				OPTION_SHALLOW);
 		caps.add(CAPABILITY_SERVER_OPTION);
 		return caps;
 	}
 
-	private void serviceV2() throws IOException {
+	private void serviceV2(PacketLineOut pckOut) throws IOException {
 		if (biDirectionalPipe) {
 			// Just like in service(), the capability advertisement
 			// is sent only if this is a bidirectional pipe. (If
@@ -1276,14 +1303,14 @@
 			}
 			pckOut.end();
 
-			while (!serveOneCommandV2()) {
+			while (!serveOneCommandV2(pckOut)) {
 				// Repeat until an empty command or EOF.
 			}
 			return;
 		}
 
 		try {
-			serveOneCommandV2();
+			serveOneCommandV2(pckOut);
 		} finally {
 			while (0 < rawIn.skip(2048) || 0 <= rawIn.read()) {
 				// Discard until EOF.
@@ -1579,7 +1606,8 @@
 	}
 
 	private boolean negotiate(FetchRequest req,
-			PackStatistics.Accumulator accumulator)
+			PackStatistics.Accumulator accumulator,
+			PacketLineOut pckOut)
 			throws IOException {
 		okToGiveUp = Boolean.FALSE;
 
@@ -1868,6 +1896,36 @@
 		}
 	}
 
+	private static void checkReachabilityByWalkingObjects(ObjectWalk walk,
+			List<RevObject> wants, Set<ObjectId> reachableFrom) throws IOException {
+
+		walk.sort(RevSort.TOPO);
+		for (RevObject want : wants) {
+			walk.markStart(want);
+		}
+		for (ObjectId have : reachableFrom) {
+			RevObject o = walk.parseAny(have);
+			walk.markUninteresting(o);
+
+			RevObject peeled = walk.peel(o);
+			if (peeled instanceof RevCommit) {
+				// By default, for performance reasons, ObjectWalk does not mark a
+				// tree as uninteresting when we mark a commit. Mark it ourselves so
+				// that we can determine reachability exactly.
+				walk.markUninteresting(((RevCommit) peeled).getTree());
+			}
+		}
+
+		RevCommit commit = walk.next();
+		if (commit != null) {
+			throw new WantNotValidException(commit);
+		}
+		RevObject object = walk.nextObject();
+		if (object != null) {
+			throw new WantNotValidException(object);
+		}
+	}
+
 	private static void checkNotAdvertisedWants(UploadPack up,
 			List<ObjectId> notAdvertisedWants, Set<ObjectId> reachableFrom)
 			throws IOException {
@@ -1888,6 +1946,17 @@
 
 			if (!allWantsAreCommits) {
 				if (!repoHasBitmaps) {
+					if (up.transferConfig.isAllowFilter()) {
+						// Use allowFilter as an indication that the server
+						// operator is willing to pay the cost of these
+						// reachability checks.
+						try (ObjectWalk objWalk = walk.toObjectWalkWithSameObjects()) {
+							checkReachabilityByWalkingObjects(objWalk,
+									wantsAsObjs, reachableFrom);
+						}
+						return;
+					}
+
 					// If unadvertized non-commits are requested, use
 					// bitmaps. If there are no bitmaps, instead of
 					// incurring the expense of a manual walk, reject
@@ -2016,6 +2085,8 @@
 	 *            shallow commits on the client that are now becoming unshallow
 	 * @param deepenNots
 	 *            objects that the client specified using --shallow-exclude
+	 * @param pckOut
+	 *            output writer
 	 * @throws IOException
 	 *             if an error occurred while generating or writing the pack.
 	 */
@@ -2023,43 +2094,51 @@
 			FetchRequest req,
 			@Nullable Collection<Ref> allTags,
 			List<ObjectId> unshallowCommits,
-			List<ObjectId> deepenNots) throws IOException {
+			List<ObjectId> deepenNots,
+			PacketLineOut pckOut) throws IOException {
 		Set<String> caps = req.getClientCapabilities();
 		boolean sideband = caps.contains(OPTION_SIDE_BAND)
 				|| caps.contains(OPTION_SIDE_BAND_64K);
 		if (sideband) {
 			try {
 				sendPack(true, req, accumulator, allTags, unshallowCommits,
-						deepenNots);
-			} catch (ServiceMayNotContinueException noPack) {
-				// This was already reported on (below).
-				throw noPack;
-			} catch (IOException | RuntimeException | Error err) {
-				if (reportInternalServerErrorOverSideband()) {
-					throw new UploadPackInternalServerErrorException(err);
-				} else {
+						deepenNots, pckOut);
+			} catch (ServiceMayNotContinueException err) {
+				String message = err.getMessage();
+				if (message == null) {
+					message = JGitText.get().internalServerError;
+				}
+				try {
+					reportInternalServerErrorOverSideband(message);
+				} catch (IOException e) {
+					err.addSuppressed(e);
 					throw err;
 				}
+				throw new UploadPackInternalServerErrorException(err);
+			} catch (IOException | RuntimeException | Error err) {
+				try {
+					reportInternalServerErrorOverSideband(
+							JGitText.get().internalServerError);
+				} catch (IOException e) {
+					err.addSuppressed(e);
+					throw err;
+				}
+				throw new UploadPackInternalServerErrorException(err);
 			}
 		} else {
-			sendPack(false, req, accumulator, allTags, unshallowCommits, deepenNots);
+			sendPack(false, req, accumulator, allTags, unshallowCommits, deepenNots,
+					pckOut);
 		}
 	}
 
-	private boolean reportInternalServerErrorOverSideband() {
-		try {
-			@SuppressWarnings("resource" /* java 7 */)
-			SideBandOutputStream err = new SideBandOutputStream(
-					SideBandOutputStream.CH_ERROR,
-					SideBandOutputStream.SMALL_BUF,
-					rawOut);
-			err.write(Constants.encode(JGitText.get().internalServerError));
-			err.flush();
-			return true;
-		} catch (Throwable cannotReport) {
-			// Ignore the reason. This is a secondary failure.
-			return false;
-		}
+	private void reportInternalServerErrorOverSideband(String message)
+			throws IOException {
+		@SuppressWarnings("resource" /* java 7 */)
+		SideBandOutputStream err = new SideBandOutputStream(
+				SideBandOutputStream.CH_ERROR, SideBandOutputStream.SMALL_BUF,
+				rawOut);
+		err.write(Constants.encode(message));
+		err.flush();
 	}
 
 	/**
@@ -2079,6 +2158,8 @@
 	 *            shallow commits on the client that are now becoming unshallow
 	 * @param deepenNots
 	 *            objects that the client specified using --shallow-exclude
+	 * @param pckOut
+	 *            output writer
 	 * @throws IOException
 	 *             if an error occurred while generating or writing the pack.
 	 */
@@ -2087,7 +2168,8 @@
 			PackStatistics.Accumulator accumulator,
 			@Nullable Collection<Ref> allTags,
 			List<ObjectId> unshallowCommits,
-			List<ObjectId> deepenNots) throws IOException {
+			List<ObjectId> deepenNots,
+			PacketLineOut pckOut) throws IOException {
 		ProgressMonitor pm = NullProgressMonitor.INSTANCE;
 		OutputStream packOut = rawOut;
 
@@ -2105,25 +2187,12 @@
 			}
 		}
 
-		try {
-			if (wantAll.isEmpty()) {
-				preUploadHook.onSendPack(this, wantIds, commonBase);
-			} else {
-				preUploadHook.onSendPack(this, wantAll, commonBase);
-			}
-			msgOut.flush();
-		} catch (ServiceMayNotContinueException noPack) {
-			if (sideband && noPack.getMessage() != null) {
-				noPack.setOutput();
-				@SuppressWarnings("resource" /* java 7 */)
-				SideBandOutputStream err = new SideBandOutputStream(
-						SideBandOutputStream.CH_ERROR,
-						SideBandOutputStream.SMALL_BUF, rawOut);
-				err.write(Constants.encode(noPack.getMessage()));
-				err.flush();
-			}
-			throw noPack;
+		if (wantAll.isEmpty()) {
+			preUploadHook.onSendPack(this, wantIds, commonBase);
+		} else {
+			preUploadHook.onSendPack(this, wantAll, commonBase);
 		}
+		msgOut.flush();
 
 		PackConfig cfg = packConfig;
 		if (cfg == null)
@@ -2219,12 +2288,18 @@
 					if (peeledId == null || objectId == null)
 						continue;
 
+					objectId = ref.getObjectId();
 					if (pw.willInclude(peeledId) && !pw.willInclude(objectId)) {
-						pw.addObject(rw.parseAny(objectId));
+						RevObject o = rw.parseAny(objectId);
+						addTagChain(o, pw);
+						pw.addObject(o);
 					}
 				}
 			}
 
+			if (pckOut.isUsingSideband()) {
+				pckOut.writeString("packfile\n"); //$NON-NLS-1$
+			}
 			pw.writePack(pm, NullProgressMonitor.INSTANCE, packOut);
 
 			if (msgOut != NullOutputStream.INSTANCE) {
@@ -2253,6 +2328,18 @@
 		}
 	}
 
+	private void addTagChain(
+			RevObject o, PackWriter pw) throws IOException {
+		while (Constants.OBJ_TAG == o.getType()) {
+			RevTag t = (RevTag) o;
+			o = t.getObject();
+			if (o.getType() == Constants.OBJ_TAG && !pw.willInclude(o.getId())) {
+				walk.parseBody(o);
+				pw.addObject(o);
+			}
+		}
+	}
+
 	private static class ResponseBufferedOutputStream extends OutputStream {
 		private final OutputStream rawOut;
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkEncryption.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkEncryption.java
index b4248ee..7a973af 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkEncryption.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkEncryption.java
@@ -66,8 +66,8 @@
 import javax.crypto.spec.PBEKeySpec;
 import javax.crypto.spec.PBEParameterSpec;
 import javax.crypto.spec.SecretKeySpec;
-import javax.xml.bind.DatatypeConverter;
 
+import org.bouncycastle.util.encoders.Hex;
 import org.eclipse.jgit.internal.JGitText;
 import org.eclipse.jgit.util.Base64;
 
@@ -301,7 +301,7 @@
 		String DEFAULT_KEY_ALGO = JetS3tV2.ALGORITHM;
 		String DEFAULT_KEY_SIZE = Integer.toString(JetS3tV2.KEY_SIZE);
 		String DEFAULT_KEY_ITER = Integer.toString(JetS3tV2.ITERATIONS);
-		String DEFAULT_KEY_SALT = DatatypeConverter.printHexBinary(JetS3tV2.SALT);
+		String DEFAULT_KEY_SALT = Hex.toHexString(JetS3tV2.SALT);
 
 		String EMPTY = ""; //$NON-NLS-1$
 
@@ -377,8 +377,7 @@
 
 			final byte[] salt;
 			try {
-				salt = DatatypeConverter
-						.parseHexBinary(keySalt.replaceAll(REGEX_WS, EMPTY));
+				salt = Hex.decode(keySalt.replaceAll(REGEX_WS, EMPTY));
 			} catch (Exception e) {
 				throw securityError(X_KEY_SALT + EMPTY + keySalt);
 			}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java
index 5c67253..4862d67 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java
@@ -82,10 +82,6 @@
 
 	static final String INFO_PACKS = "info/packs"; //$NON-NLS-1$
 
-	static final String INFO_ALTERNATES = "info/alternates"; //$NON-NLS-1$
-
-	static final String INFO_HTTP_ALTERNATES = "info/http-alternates"; //$NON-NLS-1$
-
 	static final String INFO_REFS = ROOT_DIR + Constants.INFO_REFS;
 
 	abstract URIish getURI();
@@ -107,8 +103,10 @@
 	/**
 	 * Obtain alternate connections to alternate object databases (if any).
 	 * <p>
-	 * Alternates are typically read from the file {@link #INFO_ALTERNATES} or
-	 * {@link #INFO_HTTP_ALTERNATES}. The content of each line must be resolved
+         * Alternates are typically read from the file
+         * {@link org.eclipse.jgit.lib.Constants#INFO_ALTERNATES} or
+         * {@link org.eclipse.jgit.lib.Constants#INFO_HTTP_ALTERNATES}.
+         * The content of each line must be resolved
 	 * by the implementation and a new database reference should be returned to
 	 * represent the additional location.
 	 * <p>
diff --git a/pom.xml b/pom.xml
index 51e7b67..8da9a88 100644
--- a/pom.xml
+++ b/pom.xml
@@ -51,7 +51,7 @@
   <groupId>org.eclipse.jgit</groupId>
   <artifactId>org.eclipse.jgit-parent</artifactId>
   <packaging>pom</packaging>
-  <version>5.4.1-SNAPSHOT</version>
+  <version>5.5.0-SNAPSHOT</version>
 
   <name>JGit - Parent</name>
   <url>${jgit-url}</url>
@@ -182,7 +182,7 @@
     <maven.build.timestamp.format>yyyyMMddHHmm</maven.build.timestamp.format>
     <bundle-manifest>${project.build.directory}/META-INF/MANIFEST.MF</bundle-manifest>
 
-    <jgit-last-release-version>5.3.0.201903130848-r</jgit-last-release-version>
+    <jgit-last-release-version>5.4.0.201906121030-r</jgit-last-release-version>
     <apache-sshd-version>2.2.0</apache-sshd-version>
     <jsch-version>0.1.55</jsch-version>
     <jzlib-version>1.1.1</jzlib-version>
@@ -199,14 +199,13 @@
     <httpcore-version>4.4.10</httpcore-version>
     <slf4j-version>1.7.2</slf4j-version>
     <log4j-version>1.2.15</log4j-version>
-    <maven-javadoc-plugin-version>3.1.0</maven-javadoc-plugin-version>
+    <maven-javadoc-plugin-version>3.1.1</maven-javadoc-plugin-version>
     <tycho-extras-version>1.3.0</tycho-extras-version>
     <gson-version>2.8.2</gson-version>
     <bouncycastle-version>1.61</bouncycastle-version>
-    <spotbugs-maven-plugin-version>3.1.12</spotbugs-maven-plugin-version>
+    <spotbugs-maven-plugin-version>3.1.12.2</spotbugs-maven-plugin-version>
     <maven-project-info-reports-plugin-version>3.0.0</maven-project-info-reports-plugin-version>
     <maven-jxr-plugin-version>3.0.0</maven-jxr-plugin-version>
-    <spotbugs-maven-plugin-version>3.1.12</spotbugs-maven-plugin-version>
     <maven-surefire-plugin-version>3.0.0-M3</maven-surefire-plugin-version>
     <maven-surefire-report-plugin-version>${maven-surefire-plugin-version}</maven-surefire-report-plugin-version>
     <maven-compiler-plugin-version>3.8.1</maven-compiler-plugin-version>
@@ -353,7 +352,7 @@
         <plugin>
           <groupId>org.eclipse.cbi.maven.plugins</groupId>
           <artifactId>eclipse-jarsigner-plugin</artifactId>
-          <version>1.1.5</version>
+          <version>1.1.6</version>
         </plugin>
         <plugin>
           <groupId>org.eclipse.tycho.extras</groupId>
@@ -373,12 +372,12 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-site-plugin</artifactId>
-          <version>3.7.1</version>
+          <version>3.8.2</version>
           <dependencies>
             <dependency><!-- add support for ssh/scp -->
               <groupId>org.apache.maven.wagon</groupId>
               <artifactId>wagon-ssh</artifactId>
-              <version>3.3.2</version>
+              <version>3.3.3</version>
             </dependency>
           </dependencies>
         </plugin>
@@ -927,7 +926,7 @@
               <dependency>
                 <groupId>org.eclipse.jdt</groupId>
                 <artifactId>ecj</artifactId>
-                <version>3.17.0</version>
+                <version>3.18.0</version>
               </dependency>
             </dependencies>
           </plugin>