diff --git a/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php b/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php
--- a/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php
+++ b/src/applications/repository/engine/PhabricatorRepositoryRefEngine.php
@@ -576,6 +576,7 @@
 
         $data = array(
           'commitID' => $row['id'],
+          'only' => true,
         );
 
         PhabricatorWorker::scheduleTask(