mercurial/discovery.py

--- a/mercurial/discovery.py	Thu Feb 01 08:17:11 2018 -0800
+++ b/mercurial/discovery.py	Thu Feb 01 10:29:24 2018 -0800
@@ -62,7 +62,7 @@
         if allknown:
             return (heads, False, heads)
 
-    res = setdiscovery.findcommonheads(repo.ui, repo, remote,
+    res = setdiscovery.findcommonheads(repo.ui, repo, remote, heads,
                                        abortwhenunrelated=not force,
                                        ancestorsof=ancestorsof)
     common, anyinc, srvheads = res