diff -r f60ed8cf4afc -r 6c1351352b6c mercurial/changegroup.py
--- a/mercurial/changegroup.py	Sat Nov 08 16:31:38 2014 +0000
+++ b/mercurial/changegroup.py	Sat Nov 08 16:35:15 2014 +0000
@@ -816,7 +816,7 @@
                             ', '.join([hex(c[:6]) for c in newheads]))
 
             tr.addpostclose('changegroup-runhooks-%020i' % clstart,
-                            lambda: repo._afterlock(runhooks))
+                            lambda tr: repo._afterlock(runhooks))
 
         tr.close()