diff --git a/git_cl.py b/git_cl.py
index 90ebae095f..d6ab3ef33a 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -2360,6 +2360,8 @@ class Changelist(object):
 
     if upstream_branch_name == 'master':
       return self.GetCommonAncestorWithUpstream()
+    if upstream_branch_name == 'main':
+      return self.GetCommonAncestorWithUpstream()
 
     # Check the squashed hash of the parent.
     # TODO(tandrii): consider checking parent change in Gerrit and using its