--- a/mercurial/changegroup.py	Thu Sep 12 12:53:00 2024 -0400
+++ b/mercurial/changegroup.py	Mon Sep 16 15:36:38 2024 +0200
@@ -697,7 +697,7 @@
                 repo.hook(
                     b'pretxnchangegroup',
                     throw=True,
-                    **pycompat.strkwargs(hookargs)
+                    **pycompat.strkwargs(hookargs),
                 )
 
             added = range(clstart, clend)