diff --git a/org.eclipse.jgit.ant.test/.settings/org.eclipse.jdt.core.prefs b/org.eclipse.jgit.ant.test/.settings/org.eclipse.jdt.core.prefs
index 3dd5840..4c4634a 100644
--- a/org.eclipse.jgit.ant.test/.settings/org.eclipse.jdt.core.prefs
+++ b/org.eclipse.jgit.ant.test/.settings/org.eclipse.jdt.core.prefs
@@ -52,7 +52,7 @@
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsVisibility=protected
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagDescription=return_tag
-org.eclipse.jdt.core.compiler.problem.missingJavadocTags=error
+org.eclipse.jdt.core.compiler.problem.missingJavadocTags=ignore
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsMethodTypeParameters=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsVisibility=private
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 1769832..c37d60b 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
@@ -125,6 +125,7 @@
 	 *
 	 * @param h
 	 *            A custom error handler for git-upload-pack.
+	 * @since 5.6
 	 */
 	public void setUploadPackErrorHandler(UploadPackErrorHandler h) {
 		assertNotInitialized();
diff --git a/org.eclipse.jgit.http.test/.settings/org.eclipse.jdt.core.prefs b/org.eclipse.jgit.http.test/.settings/org.eclipse.jdt.core.prefs
index 3dd5840..4c4634a 100644
--- a/org.eclipse.jgit.http.test/.settings/org.eclipse.jdt.core.prefs
+++ b/org.eclipse.jgit.http.test/.settings/org.eclipse.jdt.core.prefs
@@ -52,7 +52,7 @@
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsVisibility=protected
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagDescription=return_tag
-org.eclipse.jdt.core.compiler.problem.missingJavadocTags=error
+org.eclipse.jdt.core.compiler.problem.missingJavadocTags=ignore
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsMethodTypeParameters=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsVisibility=private
diff --git a/org.eclipse.jgit.junit/.settings/.api_filters b/org.eclipse.jgit.junit/.settings/.api_filters
new file mode 100644
index 0000000..025a79d
--- /dev/null
+++ b/org.eclipse.jgit.junit/.settings/.api_filters
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<component id="org.eclipse.jgit.junit" version="2">
+    <resource path="src/org/eclipse/jgit/junit/MockSystemReader.java" type="org.eclipse.jgit.junit.MockSystemReader">
+        <filter id="1141899266">
+            <message_arguments>
+                <message_argument value="5.1"/>
+                <message_argument value="5.5"/>
+                <message_argument value="setSystemGitConfig(FileBasedConfig)"/>
+            </message_arguments>
+        </filter>
+        <filter id="1141899266">
+            <message_arguments>
+                <message_argument value="5.5"/>
+                <message_argument value="5.6"/>
+                <message_argument value="setJGitConfig(FileBasedConfig)"/>
+            </message_arguments>
+        </filter>
+        <filter id="1142947843">
+            <message_arguments>
+                <message_argument value="5.1.9"/>
+                <message_argument value="setSystemGitConfig(FileBasedConfig)"/>
+            </message_arguments>
+        </filter>
+        <filter id="1142947843">
+            <message_arguments>
+                <message_argument value="5.1.9"/>
+                <message_argument value="setUserGitConfig(FileBasedConfig)"/>
+            </message_arguments>
+        </filter>
+        <filter id="1143996420">
+            <message_arguments>
+                <message_argument value="getJGitConfig()"/>
+            </message_arguments>
+        </filter>
+    </resource>
+    <resource path="src/org/eclipse/jgit/junit/Repeat.java" type="org.eclipse.jgit.junit.Repeat">
+        <filter id="1092616195">
+            <message_arguments>
+                <message_argument value="5.1.9"/>
+                <message_argument value="abortOnFailure()"/>
+            </message_arguments>
+        </filter>
+    </resource>
+    <resource path="src/org/eclipse/jgit/junit/RepeatRule.java" type="org.eclipse.jgit.junit.RepeatRule$RepeatedTestException">
+        <filter id="1142947843">
+            <message_arguments>
+                <message_argument value="5.1.9"/>
+                <message_argument value="RepeatedTestException(String)"/>
+            </message_arguments>
+        </filter>
+    </resource>
+    <resource path="src/org/eclipse/jgit/junit/RepositoryTestCase.java" type="org.eclipse.jgit.junit.RepositoryTestCase">
+        <filter id="338792546">
+            <message_arguments>
+                <message_argument value="org.eclipse.jgit.junit.RepositoryTestCase"/>
+                <message_argument value="fsTick(File)"/>
+            </message_arguments>
+        </filter>
+        <filter id="1142947843">
+            <message_arguments>
+                <message_argument value="5.1.9"/>
+                <message_argument value="fsTick(File)"/>
+            </message_arguments>
+        </filter>
+    </resource>
+    <resource path="src/org/eclipse/jgit/junit/time/TimeUtil.java" type="org.eclipse.jgit.junit.time.TimeUtil">
+        <filter id="1109393411">
+            <message_arguments>
+                <message_argument value="5.1.9"/>
+                <message_argument value="org.eclipse.jgit.junit.time.TimeUtil"/>
+            </message_arguments>
+        </filter>
+    </resource>
+</component>
diff --git a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/MockSystemReader.java b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/MockSystemReader.java
index 664615e..6bfe706 100644
--- a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/MockSystemReader.java
+++ b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/MockSystemReader.java
@@ -80,6 +80,7 @@
 	 * @param userGitConfig
 	 *            set another user-level git config
 	 * @return the old user-level git config
+	 * @since 5.1.9
 	 */
 	public FileBasedConfig setUserGitConfig(FileBasedConfig userGitConfig) {
 		FileBasedConfig old = this.userGitConfig;
@@ -92,6 +93,7 @@
 	 *
 	 * @param jgitConfig
 	 *            set the jgit configuration
+	 * @since 5.5
 	 */
 	public void setJGitConfig(FileBasedConfig jgitConfig) {
 		this.jgitConfig = jgitConfig;
@@ -103,6 +105,7 @@
 	 * @param systemGitConfig
 	 *            the new system-level git config
 	 * @return the old system-level config
+	 * @since 5.1.9
 	 */
 	public FileBasedConfig setSystemGitConfig(FileBasedConfig systemGitConfig) {
 		FileBasedConfig old = this.systemGitConfig;
diff --git a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepeatRule.java b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepeatRule.java
index 3db3ba9..adcc10c 100644
--- a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepeatRule.java
+++ b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepeatRule.java
@@ -60,6 +60,7 @@
 		 *
 		 * @param message
 		 *            the error message
+		 * @since 5.1.9
 		 */
 		public RepeatedTestException(String message) {
 			super(message);
diff --git a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java
index de11e2c..cde9c2f 100644
--- a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java
+++ b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java
@@ -329,6 +329,7 @@
 	 *         greater than then the lastmodification time of lastfile.
 	 * @throws InterruptedException
 	 * @throws IOException
+	 * @since 5.1.9
 	 */
 	public static Instant fsTick(File lastFile)
 			throws InterruptedException,
diff --git a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/SeparateClassloaderTestRunner.java b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/SeparateClassloaderTestRunner.java
index b982787..106abf0 100644
--- a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/SeparateClassloaderTestRunner.java
+++ b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/SeparateClassloaderTestRunner.java
@@ -21,6 +21,8 @@
  * This class is used when it's required to load jgit classes in separate
  * classloader for each test class. It can be needed to isolate static field
  * initialization between separate tests.
+ *
+ * @since 5.5
  */
 public class SeparateClassloaderTestRunner extends BlockJUnit4ClassRunner {
 
diff --git a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/TestRepository.java b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/TestRepository.java
index a5b3b1f..fc19de0 100644
--- a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/TestRepository.java
+++ b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/TestRepository.java
@@ -337,6 +337,7 @@
 	 *            zero or more IDs of the commit's parents.
 	 * @return the ID of the new commit.
 	 * @throws Exception
+	 * @since 5.5
 	 */
 	public ObjectId unparsedCommit(ObjectId... parents) throws Exception {
 		return unparsedCommit(1, tree(), parents);
@@ -429,6 +430,7 @@
 	 *            zero or more IDs of the commit's parents.
 	 * @return the ID of the new commit.
 	 * @throws Exception
+	 * @since 5.5
 	 */
 	public ObjectId unparsedCommit(final int secDelta, final RevTree tree,
 			final ObjectId... parents) throws Exception {
diff --git a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/time/TimeUtil.java b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/time/TimeUtil.java
index 2ebb8e2..f93ac57 100644
--- a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/time/TimeUtil.java
+++ b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/time/TimeUtil.java
@@ -20,6 +20,8 @@
 
 /**
  * Utility methods for handling timestamps
+ *
+ * @since 5.1.9
  */
 public class TimeUtil {
 	/**
diff --git a/org.eclipse.jgit.lfs.server.test/.settings/org.eclipse.jdt.core.prefs b/org.eclipse.jgit.lfs.server.test/.settings/org.eclipse.jdt.core.prefs
index 3dd5840..4c4634a 100644
--- a/org.eclipse.jgit.lfs.server.test/.settings/org.eclipse.jdt.core.prefs
+++ b/org.eclipse.jgit.lfs.server.test/.settings/org.eclipse.jdt.core.prefs
@@ -52,7 +52,7 @@
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsVisibility=protected
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagDescription=return_tag
-org.eclipse.jdt.core.compiler.problem.missingJavadocTags=error
+org.eclipse.jdt.core.compiler.problem.missingJavadocTags=ignore
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsMethodTypeParameters=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsVisibility=private
diff --git a/org.eclipse.jgit.lfs.test/.settings/org.eclipse.jdt.core.prefs b/org.eclipse.jgit.lfs.test/.settings/org.eclipse.jdt.core.prefs
index 3dd5840..4c4634a 100644
--- a/org.eclipse.jgit.lfs.test/.settings/org.eclipse.jdt.core.prefs
+++ b/org.eclipse.jgit.lfs.test/.settings/org.eclipse.jdt.core.prefs
@@ -52,7 +52,7 @@
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsVisibility=protected
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagDescription=return_tag
-org.eclipse.jdt.core.compiler.problem.missingJavadocTags=error
+org.eclipse.jdt.core.compiler.problem.missingJavadocTags=ignore
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsMethodTypeParameters=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsVisibility=private
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 c5a8b09..88e3fc1 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="1583183009">
+<target name="jgit-4.10" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/2018-12/"/>
+      <repository location="https://download.eclipse.org/releases/2018-12/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.tpd
index ed3cd21..dc1431b 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.10.tpd
@@ -3,6 +3,7 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/2018-12/" {
+location "https://download.eclipse.org/releases/2018-12/" {
 	org.eclipse.osgi lazy
 }
+
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 ac0c33d..b2195da 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="1583183034">
+<target name="jgit-4.11" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/2019-03/"/>
+      <repository location="https://download.eclipse.org/releases/2019-03/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.tpd
index 426b61e..7687c3c 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.11.tpd
@@ -3,6 +3,6 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/2019-03/" {
+location "https://download.eclipse.org/releases/2019-03/" {
 	org.eclipse.osgi lazy
 }
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.target
index 39d011c..6f0f901 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.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" sequenceNumber="1583183009">
+<target name="jgit-4.12" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/2019-06/"/>
+      <repository location="https://download.eclipse.org/releases/2019-06/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.tpd
index 8a8c0df..c1b7d7f 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.12.tpd
@@ -3,6 +3,6 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/2019-06/" {
+location "https://download.eclipse.org/releases/2019-06/" {
 	org.eclipse.osgi lazy
 }
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.target
index f875b54..a49a3da 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.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-4.13" sequenceNumber="1583183009">
+<target name="jgit-4.13" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/2019-09/"/>
+      <repository location="https://download.eclipse.org/releases/2019-09/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.tpd
index a58e215..ebd75d3 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.13.tpd
@@ -3,6 +3,6 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/2019-09/" {
+location "https://download.eclipse.org/releases/2019-09/" {
 	org.eclipse.osgi lazy
 }
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.target
index d601082..f0a499b 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.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-4.14-staging" sequenceNumber="1583184372">
+<target name="jgit-4.14" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/2019-12/201912181000/"/>
+      <repository location="https://download.eclipse.org/releases/2019-12/201912181000/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.tpd
index a9ef71d..fc6717a 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.14.tpd
@@ -1,8 +1,9 @@
-target "jgit-4.14-staging" with source configurePhase
+target "jgit-4.14" with source configurePhase
 
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/2019-12/201912181000/" {
+location "https://download.eclipse.org/releases/2019-12/201912181000/" {
 	org.eclipse.osgi lazy
 }
+
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15-staging.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15-staging.tpd
deleted file mode 100644
index 1bfb375..0000000
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15-staging.tpd
+++ /dev/null
@@ -1,8 +0,0 @@
-target "jgit-4.14-staging" with source configurePhase
-
-include "projects/jetty-9.4.x.tpd"
-include "orbit/R20200224183213-2020-03.tpd"
-
-location "http://download.eclipse.org/staging/2020-03/" {
-	org.eclipse.osgi lazy
-}
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15-staging.target b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15.target
similarity index 95%
rename from org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15-staging.target
rename to org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15.target
index ab8e6ec..8a0bd04 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15-staging.target
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15.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-4.14-staging" sequenceNumber="1583184374">
+<target name="jgit-4.14" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/staging/2020-03/"/>
+      <repository location="https://download.eclipse.org/releases/2020-03/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15.tpd
new file mode 100644
index 0000000..a87fdec
--- /dev/null
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.15.tpd
@@ -0,0 +1,8 @@
+target "jgit-4.14" with source configurePhase
+
+include "projects/jetty-9.4.x.tpd"
+include "orbit/R20200224183213-2020-03.tpd"
+
+location "https://download.eclipse.org/releases/2020-03/" {
+	org.eclipse.osgi lazy
+}
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 8cdce93..febb615 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="1583183021">
+<target name="jgit-4.6" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/neon/"/>
+      <repository location="https://download.eclipse.org/releases/neon/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.tpd
index 5e169d8..abe00ab 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.6.tpd
@@ -3,6 +3,6 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/neon/" {
+location "https://download.eclipse.org/releases/neon/" {
 	org.eclipse.osgi lazy
 }
\ No newline at end of file
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 bd28708..fd85178 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="1583183012">
+<target name="jgit-4.7" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/oxygen/"/>
+      <repository location="https://download.eclipse.org/releases/oxygen/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.tpd
index c875302..55672f8 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.7.tpd
@@ -3,6 +3,6 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/oxygen/" {
+location "https://download.eclipse.org/releases/oxygen/" {
 	org.eclipse.osgi lazy
 }
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 cd15ba6..3962cc8 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="1583183009">
+<target name="jgit-4.8" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/photon/"/>
+      <repository location="https://download.eclipse.org/releases/photon/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.tpd
index 91ab597..93bb323 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.8.tpd
@@ -3,6 +3,6 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/photon/" {
+location "https://download.eclipse.org/releases/photon/" {
 	org.eclipse.osgi lazy
 }
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 f71923f..90a7782 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="1583183009">
+<target name="jgit-4.9" sequenceNumber="1638638002">
   <locations>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.client" version="9.4.25.v20191220"/>
@@ -20,7 +20,7 @@
       <unit id="org.eclipse.jetty.servlet.source" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util" version="9.4.25.v20191220"/>
       <unit id="org.eclipse.jetty.util.source" version="9.4.25.v20191220"/>
-      <repository id="jetty-9.4.25" location="https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/"/>
+      <repository id="jetty-9.4.25" location="https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/"/>
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="com.google.gson" version="2.8.2.v20180104-1110"/>
@@ -88,7 +88,7 @@
     </location>
     <location includeMode="slicer" includeAllPlatforms="false" includeSource="true" includeConfigurePhase="true" type="InstallableUnit">
       <unit id="org.eclipse.osgi" version="0.0.0"/>
-      <repository location="http://download.eclipse.org/releases/2018-09/"/>
+      <repository location="https://download.eclipse.org/releases/2018-09/"/>
     </location>
   </locations>
 </target>
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.tpd
index faa6fba..4856efd 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/jgit-4.9.tpd
@@ -3,6 +3,6 @@
 include "projects/jetty-9.4.x.tpd"
 include "orbit/R20200224183213-2020-03.tpd"
 
-location "http://download.eclipse.org/releases/2018-09/" {
+location "https://download.eclipse.org/releases/2018-09/" {
 	org.eclipse.osgi lazy
 }
\ No newline at end of file
diff --git a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/projects/jetty-9.4.x.tpd b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/projects/jetty-9.4.x.tpd
index fb9bb2d..3c93544 100644
--- a/org.eclipse.jgit.packaging/org.eclipse.jgit.target/projects/jetty-9.4.x.tpd
+++ b/org.eclipse.jgit.packaging/org.eclipse.jgit.target/projects/jetty-9.4.x.tpd
@@ -1,6 +1,6 @@
 target "jetty-9.4.x" with source configurePhase
 
-location jetty-9.4.25 "https://download.eclipse.org/jetty/updates/jetty-bundles-9.x/9.4.25.v20191220/" {
+location jetty-9.4.25 "https://archive.eclipse.org/jetty/updates/jetty-bundles-9.x/jetty-bundles-9.x/9.4.25.v20191220/" {
 	org.eclipse.jetty.client [9.4.25.v20191220,9.4.25.v20191220]
 	org.eclipse.jetty.client.source [9.4.25.v20191220,9.4.25.v20191220]
 	org.eclipse.jetty.continuation [9.4.25.v20191220,9.4.25.v20191220]
diff --git a/org.eclipse.jgit.packaging/pom.xml b/org.eclipse.jgit.packaging/pom.xml
index 713740a..b04b243 100644
--- a/org.eclipse.jgit.packaging/pom.xml
+++ b/org.eclipse.jgit.packaging/pom.xml
@@ -22,7 +22,7 @@
   <name>JGit Tycho Parent</name>
 
   <properties>
-    <tycho-version>1.6.0</tycho-version>
+    <tycho-version>1.7.0</tycho-version>
     <tycho-extras-version>${tycho-version}</tycho-extras-version>
     <target-platform>jgit-4.6</target-platform>
   </properties>
diff --git a/org.eclipse.jgit.pgm.test/.settings/org.eclipse.jdt.core.prefs b/org.eclipse.jgit.pgm.test/.settings/org.eclipse.jdt.core.prefs
index 3dd5840..4c4634a 100644
--- a/org.eclipse.jgit.pgm.test/.settings/org.eclipse.jdt.core.prefs
+++ b/org.eclipse.jgit.pgm.test/.settings/org.eclipse.jdt.core.prefs
@@ -52,7 +52,7 @@
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsVisibility=protected
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagDescription=return_tag
-org.eclipse.jdt.core.compiler.problem.missingJavadocTags=error
+org.eclipse.jdt.core.compiler.problem.missingJavadocTags=ignore
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsMethodTypeParameters=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsVisibility=private
diff --git a/org.eclipse.jgit.test/.settings/org.eclipse.jdt.core.prefs b/org.eclipse.jgit.test/.settings/org.eclipse.jdt.core.prefs
index 3dd5840..4c4634a 100644
--- a/org.eclipse.jgit.test/.settings/org.eclipse.jdt.core.prefs
+++ b/org.eclipse.jgit.test/.settings/org.eclipse.jdt.core.prefs
@@ -52,7 +52,7 @@
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocCommentsVisibility=protected
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagDescription=return_tag
-org.eclipse.jdt.core.compiler.problem.missingJavadocTags=error
+org.eclipse.jdt.core.compiler.problem.missingJavadocTags=ignore
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsMethodTypeParameters=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsOverriding=disabled
 org.eclipse.jdt.core.compiler.problem.missingJavadocTagsVisibility=private
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/FileSnapshot.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/FileSnapshot.java
index 54ff7d2..d7f6ef3 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/FileSnapshot.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/FileSnapshot.java
@@ -185,6 +185,12 @@
 	private FileStoreAttributes fileStoreAttributeCache;
 
 	/**
+	 * if {@code true} read filesystem time resolution from configuration file
+	 * otherwise use fallback resolution
+	 */
+	private boolean useConfig;
+
+	/**
 	 * Object that uniquely identifies the given file, or {@code
 	 * null} if a file key is not available
 	 */
@@ -220,9 +226,7 @@
 	protected FileSnapshot(File file, boolean useConfig) {
 		this.file = file;
 		this.lastRead = Instant.now();
-		this.fileStoreAttributeCache = useConfig
-				? FS.getFileStoreAttributes(file.toPath().getParent())
-				: FALLBACK_FILESTORE_ATTRIBUTES;
+		this.useConfig = useConfig;
 		BasicFileAttributes fileAttributes = null;
 		try {
 			fileAttributes = FS.DETECTED.fileAttributes(file);
@@ -366,7 +370,7 @@
 	 *             if sleep was interrupted
 	 */
 	public void waitUntilNotRacy() throws InterruptedException {
-		long timestampResolution = fileStoreAttributeCache
+		long timestampResolution = fileStoreAttributeCache()
 				.getFsTimestampResolution().toNanos();
 		while (isRacyClean(Instant.now())) {
 			TimeUnit.NANOSECONDS.sleep(timestampResolution);
@@ -403,6 +407,15 @@
 		return equals(other);
 	}
 
+	/**
+	 * Check if the file exists
+	 *
+	 * @return true if the file exists
+	 */
+	public boolean fileExists() {
+		return !MISSING_FILEKEY.equals(this.fileKey);
+	}
+
 	/** {@inheritDoc} */
 	@Override
 	public int hashCode() {
@@ -487,10 +500,10 @@
 	}
 
 	private long getEffectiveRacyThreshold() {
-		long timestampResolution = fileStoreAttributeCache
+		long timestampResolution = fileStoreAttributeCache()
 				.getFsTimestampResolution().toNanos();
-		long minRacyInterval = fileStoreAttributeCache.getMinimalRacyInterval()
-				.toNanos();
+		long minRacyInterval = fileStoreAttributeCache()
+				.getMinimalRacyInterval().toNanos();
 		long max = Math.max(timestampResolution, minRacyInterval);
 		// safety margin: factor 2.5 below 100ms otherwise 1.25
 		return max < 100_000_000L ? max * 5 / 2 : max * 5 / 4;
@@ -550,4 +563,13 @@
 		}
 		return changed;
 	}
+
+	private FileStoreAttributes fileStoreAttributeCache() {
+		if (fileStoreAttributeCache == null) {
+			fileStoreAttributeCache = useConfig
+					? FS.getFileStoreAttributes(file.toPath().getParent())
+					: FALLBACK_FILESTORE_ATTRIBUTES;
+		}
+		return fileStoreAttributeCache;
+	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectoryPackParser.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectoryPackParser.java
index e275186..7179d14 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectoryPackParser.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/ObjectDirectoryPackParser.java
@@ -151,7 +151,7 @@
 		String p = pack.getAbsolutePath();
 		String i = p.substring(0, p.length() - ".pack".length()) + ".idx"; //$NON-NLS-1$ //$NON-NLS-2$
 		File idx = new File(i);
-		if (idx.exists() && idx.isFile())
+		if (idx.isFile())
 			size += idx.length();
 		return size;
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java
index 17a9100..2167262 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java
@@ -1092,10 +1092,14 @@
 		final int limit = 4096;
 		final byte[] buf;
 		FileSnapshot otherSnapshot = FileSnapshot.save(path);
+		if (!otherSnapshot.fileExists()) {
+			return null;
+		}
+
 		try {
 			buf = IO.readSome(path, limit);
 		} catch (FileNotFoundException noFile) {
-			if (path.exists() && path.isFile()) {
+			if (path.isFile()) {
 				throw noFile;
 			}
 			return null; // doesn't exist or no file; not a reference.
diff --git a/pom.xml b/pom.xml
index 363e96e..7a3bf0b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-  Copyright (C) 2009-2010, Google Inc.
+   Copyright (C) 2009-2010, Google Inc.
   Copyright (C) 2012, Matthias Sohn <matthias.sohn@sap.com> and others
 
   This program and the accompanying materials are made available under the
@@ -168,14 +168,15 @@
     <httpcore-version>4.4.12</httpcore-version>
     <slf4j-version>1.7.2</slf4j-version>
     <log4j-version>1.2.15</log4j-version>
-    <maven-javadoc-plugin-version>3.1.1</maven-javadoc-plugin-version>
-    <tycho-extras-version>1.6.0</tycho-extras-version>
+    <maven-javadoc-plugin-version>3.3.1</maven-javadoc-plugin-version>
+    <tycho-extras-version>1.7.0</tycho-extras-version>
     <gson-version>2.8.2</gson-version>
     <bouncycastle-version>1.64</bouncycastle-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>
-    <maven-surefire-plugin-version>3.0.0-M4</maven-surefire-plugin-version>
+    <maven-project-info-reports-plugin-version>3.1.2</maven-project-info-reports-plugin-version>
+    <maven-jxr-plugin-version>3.1.1</maven-jxr-plugin-version>
+    <maven-surefire-plugin-version>3.0.0-M5</maven-surefire-plugin-version>
+    <spotbugs-maven-plugin-version>4.3.0</spotbugs-maven-plugin-version>
+    <maven-surefire-plugin-version>3.0.0-M5</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>
 
@@ -234,19 +235,19 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-shade-plugin</artifactId>
-          <version>3.2.2</version>
+          <version>3.2.4</version>
         </plugin>
 
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-antrun-plugin</artifactId>
-          <version>1.8</version>
+          <version>3.0.0</version>
         </plugin>
 
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-dependency-plugin</artifactId>
-          <version>3.1.1</version>
+          <version>3.2.0</version>
         </plugin>
 
         <plugin>
@@ -275,7 +276,7 @@
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>build-helper-maven-plugin</artifactId>
-          <version>3.0.0</version>
+          <version>3.2.0</version>
         </plugin>
 
         <plugin>
@@ -298,7 +299,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-pmd-plugin</artifactId>
-          <version>3.13.0</version>
+          <version>3.15.0</version>
           <configuration>
             <sourceEncoding>utf-8</sourceEncoding>
             <minimumTokens>100</minimumTokens>
@@ -336,12 +337,12 @@
         <plugin>
           <groupId>org.jacoco</groupId>
           <artifactId>jacoco-maven-plugin</artifactId>
-          <version>0.8.5</version>
+          <version>0.8.7</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-site-plugin</artifactId>
-          <version>3.8.2</version>
+          <version>3.9.1</version>
           <dependencies>
             <dependency><!-- add support for ssh/scp -->
               <groupId>org.apache.maven.wagon</groupId>
@@ -383,7 +384,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-resources-plugin</artifactId>
-          <version>3.1.0</version>
+          <version>3.2.0</version>
         </plugin>
         <plugin>
           <groupId>org.springframework.boot</groupId>
@@ -397,7 +398,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-enforcer-plugin</artifactId>
-        <version>3.0.0-M3</version>
+        <version>3.0.0</version>
         <executions>
           <execution>
             <id>enforce-maven</id>