diff --git a/RELEASE-NOTES-1.20 b/RELEASE-NOTES-1.20
index c41550ec201..2d5857311d2 100644
--- a/RELEASE-NOTES-1.20
+++ b/RELEASE-NOTES-1.20
@@ -15,6 +15,8 @@ Since 1.20, the lowest supported version of PHP is now 5.3.2. Please
 upgrade PHP if you have not done so prior to upgrading MediaWiki.
 
 === Configuration changes in 1.20 ===
+* $wgGitRepositoryViewers defines a mapping from Git remote repository to the
+  Gitweb instance URL used in Special:Version
 * `$wgUsePathInfo = true;` is no longer needed to make $wgArticlePath work on servers
   using like nginx, lighttpd, and apache over fastcgi. MediaWiki now always extracts
   path info from REQUEST_URI if it's available.
diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index d3c24ca301d..d05f02073d1 100644
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -4562,6 +4562,20 @@ $wgReadOnlyFile = false;
  */
 $wgUpgradeKey = false;
 
+/**
+ * Map GIT repository URLs to viewer URLs to provide links in Special:Version
+ *
+ * Key is a pattern passed to preg_match() and preg_replace(),
+ * without the delimiters (which are #) and must match the whole URL.
+ * The value is the replacement for the key (it can contain $1, etc.)
+ * %h will be replaced by the short SHA-1 (7 first chars) and %H by the
+ * full SHA-1 of the HEAD revision.
+ */
+$wgGitRepositoryViewers = array(
+    'https://gerrit.wikimedia.org/r/p/(.*)' => 'https://gerrit.wikimedia.org/r/gitweb?p=$1;h=%H',
+    'ssh://(?:[a-z0-9_]+@)?gerrit.wikimedia.org:29418/(.*)' => 'https://gerrit.wikimedia.org/r/gitweb?p=$1;h=%H',
+);
+
 /** @} */ # End of maintenance }
 
 /************************************************************************//**
diff --git a/includes/GitInfo.php b/includes/GitInfo.php
index b15cedd8771..e1b0379b6cc 100644
--- a/includes/GitInfo.php
+++ b/includes/GitInfo.php
@@ -187,20 +187,10 @@ class GitInfo {
 	 * @return array
 	 */
 	protected static function getViewers() {
+		global $wgGitRepositoryViewers;
+
 		if( self::$viewers === false ) {
-
-			// Map of repo URLs to viewer URLs.
-			//
-			// Key is a pattern passed to preg_match() and preg_replace(),
-			// without the delimiters (which are #) and must match the whole URL.
-			// The value is the replacement for the key (it can contain $1, etc.)
-			// %h will be replaced by the short SHA-1 (7 first chars) and %H by the
-			// full SHA-1 of the HEAD revision.
-			self::$viewers = array(
-				'https://gerrit.wikimedia.org/r/p/(.*)' => 'https://gerrit.wikimedia.org/r/gitweb?p=$1;h=%H',
-				'ssh://(?:[a-z0-9_]+@)?gerrit.wikimedia.org:29418/(.*)' => 'https://gerrit.wikimedia.org/r/gitweb?p=$1;h=%H',
-			);
-
+			self::$viewers = $wgGitRepositoryViewers;
 			wfRunHooks( 'GitViewers', array( &self::$viewers ) );
 		}