diff --git a/cbuildbot/stages/config_stages.py b/cbuildbot/stages/config_stages.py
index fe4cb5c..3bfbd42 100644
--- a/cbuildbot/stages/config_stages.py
+++ b/cbuildbot/stages/config_stages.py
@@ -485,7 +485,7 @@
     git.RunGit(
         self.project_dir, ['config', 'push.default', 'tracking'],
         print_cmd=True)
-    git.PushBranch('HEAD', self.project_dir, dryrun=self._run.options.debug)
+    git.PushBranch('main', self.project_dir, dryrun=self._run.options.debug)
     logging.PrintBuildbotStepText('luci-scheduler.cfg: Updated.')
 
   def PerformStage(self):