diff --git a/hggit/git_handler.py b/hggit/git_handler.py
index b21d6d8ea9ba89f00b467f95a2b5e102e8ac07b2_aGdnaXQvZ2l0X2hhbmRsZXIucHk=..c7d27c134ed9516cb3239c0cd0ce672004fab3ab_aGdnaXQvZ2l0X2hhbmRsZXIucHk= 100644
--- a/hggit/git_handler.py
+++ b/hggit/git_handler.py
@@ -667,7 +667,7 @@
             refs = self.git.refs.as_dict()
         return git2hg.find_incoming(self.git.object_store, self._map_git, refs)
 
-    def import_git_objects(self, remote_name=None, refs=None):
+    def import_git_objects(self, remote_name, refs):
         result = self.get_git_incoming(refs)
         commits = result.commits
         commit_cache = result.commit_cache