diff -r 4741428606ed -r a14642bdf364 mercurial/localrepo.py
--- a/mercurial/localrepo.py	Sat Sep 30 07:44:20 2017 -0400
+++ b/mercurial/localrepo.py	Sat Sep 30 07:44:34 2017 -0400
@@ -2181,7 +2181,6 @@
         to be performed before pushing, or call it if they override push
         command.
         """
-        pass
 
     @unfilteredpropertycache
     def prepushoutgoinghooks(self):