diff -r d771641b7051 -r e10000369b47 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Fri Mar 28 14:43:30 2014 -0700
+++ b/mercurial/localrepo.py	Tue Apr 01 13:45:48 2014 -0700
@@ -1673,7 +1673,7 @@
     def pull(self, remote, heads=None, force=False):
         return exchange.pull (self, remote, heads, force)
 
-    def checkpush(self, force, revs):
+    def checkpush(self, pushop):
         """Extensions can override this function if additional checks have
         to be performed before pushing, or call it if they override push
         command.