diff -r 10e162bb9bf5 -r 6c7aaf59b21e mercurial/exchange.py
--- a/mercurial/exchange.py	Sun Sep 24 21:27:18 2017 +0200
+++ b/mercurial/exchange.py	Tue Sep 26 15:55:01 2017 +0200
@@ -1400,10 +1400,6 @@
     if pullop.fetch:
         pullop.cgresult = bundle2.combinechangegroupresults(op)
 
-    # If the bundle had a phase-heads part, then phase exchange is already done
-    if op.records['phase-heads']:
-        pullop.stepsdone.add('phases')
-
     # processing phases change
     for namespace, value in op.records['listkeys']:
         if namespace == 'phases':