diff -r 800bb35d891e -r 13dc7f29531e mercurial/bundle2.py
--- a/mercurial/bundle2.py	Wed Aug 16 15:48:48 2017 -0700
+++ b/mercurial/bundle2.py	Thu Aug 17 13:04:47 2017 -0700
@@ -1815,6 +1815,7 @@
     """apply phases from bundle part to repo"""
     headsbyphase = _readphaseheads(inpart)
     phases.updatephases(op.repo.unfiltered(), op.gettransaction(), headsbyphase)
+    op.records.add('phase-heads', {})
 
 @parthandler('reply:pushkey', ('return', 'in-reply-to'))
 def handlepushkeyreply(op, inpart):