--- a/mercurial/changegroup.py	Wed Jul 04 12:12:49 2018 -0700
+++ b/mercurial/changegroup.py	Sun Jul 01 14:25:44 2018 -0700
@@ -245,7 +245,7 @@
         # be empty during the pull
         self.manifestheader()
         deltas = self.deltaiter()
-        repo.manifestlog._revlog.addgroup(deltas, revmap, trp)
+        repo.manifestlog.addgroup(deltas, revmap, trp)
         prog.complete()
         self.callback = None