mercurial/commands.py

--- a/mercurial/commands.py	Wed Jun 21 14:42:04 2017 -0700
+++ b/mercurial/commands.py	Thu Jun 22 13:58:20 2017 -0700
@@ -5216,7 +5216,7 @@
                                    "information"))
                 changes = [r.get('return', 0)
                            for r in op.records['changegroup']]
-                modheads = changegroup.combineresults(changes)
+                modheads = bundle2.combinechangegroupresults(changes)
             else:
                 txnname = 'unbundle\n%s' % util.hidepassword(url)
                 with repo.transaction(txnname) as tr: