diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilder.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilder.java
index bef109c..fc808d8 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilder.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilder.java
@@ -13,6 +13,7 @@
 // limitations under the License.
 package com.googlesource.gerrit.plugins.github.git;
 
+import com.google.common.base.Strings;
 import com.google.gerrit.extensions.registration.DynamicItem;
 import com.google.inject.Inject;
 import com.googlesource.gerrit.plugins.github.GitHubURL;
@@ -44,23 +45,30 @@
   }
 
   Config build(String repositoryName) {
-    Config remoteConfig = new Config();
+    Config remoteConfig = replicationConfigItem.get().get(username);
 
     remoteConfig.setString("remote", username, "username", username);
     remoteConfig.setString("remote", username, "password", authToken);
 
-    remoteConfig.setString("remote", username, "url", gitHubUrl + "/${name}.git");
+    setRemoteConfigIfNotSet(remoteConfig, "url", gitHubUrl + "/${name}.git");
 
     String[] existingProjects = getProjects();
     List<String> projects = new ArrayList<>(List.of(existingProjects));
     projects.add(repositoryName);
 
     remoteConfig.setStringList("remote", username, "projects", projects);
-    remoteConfig.setString("remote", username, "push", "refs/*:refs/*");
+    setRemoteConfigIfNotSet(remoteConfig, "push", "refs/*:refs/*");
 
     return remoteConfig;
   }
 
+  private void setRemoteConfigIfNotSet(Config remoteConfig, String key, String value) {
+    String existingValue = remoteConfig.getString("remote", username, key);
+    if (Strings.isNullOrEmpty(existingValue)) {
+      remoteConfig.setString("remote", username, key, value);
+    }
+  }
+
   private String[] getProjects() {
     ReplicationRemotesApi config = replicationConfigItem.get();
     if (config != null) {
diff --git a/github-plugin/src/test/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilderTest.java b/github-plugin/src/test/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilderTest.java
index c6023e0..015b52e 100644
--- a/github-plugin/src/test/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilderTest.java
+++ b/github-plugin/src/test/java/com/googlesource/gerrit/plugins/github/git/ReplicationRemoteConfigBuilderTest.java
@@ -61,6 +61,21 @@
     assertThat(actual.getString("remote", username, "push")).isEqualTo("refs/*:refs/*");
   }
 
+  @Test
+  public void shoudKeepCustomUrlAndPushRefSpecInRemoteConfig() throws Exception {
+    Config currentConfig = new Config();
+    String customPushRefSpec = "+refs/heads/myheads/*:refs/heads/myheads/*";
+    String customUrl = "ssh://github@github.com/myuser/${name}.git";
+    currentConfig.setString("remote", username, "push", customPushRefSpec);
+    currentConfig.setString("remote", username, "url", customUrl);
+
+    ReplicationRemoteConfigBuilder builder = newReplicationRemoteConfigBuilder(currentConfig);
+    Config actual = builder.build(repoName);
+
+    assertThat(actual.getString("remote", username, "push")).isEqualTo(customPushRefSpec);
+    assertThat(actual.getString("remote", username, "url")).isEqualTo(customUrl);
+  }
+
   private ReplicationRemoteConfigBuilder newReplicationRemoteConfigBuilder() throws Exception {
     return newReplicationRemoteConfigBuilder(new Config());
   }