--- a/mercurial/cmdutil.py	Tue Apr 03 08:55:16 2018 -0700
+++ b/mercurial/cmdutil.py	Tue Apr 03 08:55:49 2018 -0700
@@ -1839,7 +1839,7 @@
     wanted = set()
     slowpath = match.anypats() or (not match.always() and opts.get('removed'))
     fncache = {}
-    change = repo.changectx
+    change = repo.__getitem__
 
     # First step is to fill wanted, the set of revisions that we want to yield.
     # When it does not induce extra cost, we also fill fncache for revisions in