diff --git a/roles/git/hooks/files/post-receive-fedora-messaging b/roles/git/hooks/files/post-receive-fedora-messaging
index 7332e527fb..c1606e07de 100644
--- a/roles/git/hooks/files/post-receive-fedora-messaging
+++ b/roles/git/hooks/files/post-receive-fedora-messaging
@@ -120,7 +120,7 @@ for line in lines:
         revs = [head.id]
 
     def _build_commit(rev):
-        if instance(rev, str):
+        if isinstance(rev, str):
             commit = repo.revparse_single(rev)
         else:
             commit = repo.revparse_single(rev.hex)