diff --git a/mercurial/changegroup.py b/mercurial/changegroup.py
--- a/mercurial/changegroup.py
+++ b/mercurial/changegroup.py
@@ -314,7 +314,6 @@ class cg1unpacker(object):
         - number of heads stays the same: 1
         """
         repo = repo.unfiltered()
-        wasempty = (len(repo.changelog) == 0)
         def csmap(x):
             repo.ui.debug("add changeset %s\n" % short(x))
             return len(cl)
@@ -389,7 +388,7 @@ class cg1unpacker(object):
             self.callback = None
             pr = prog(_('files'), efiles)
             newrevs, newfiles = _addchangegroupfiles(
-                repo, self, revmap, trp, pr, needfiles, wasempty)
+                repo, self, revmap, trp, pr, needfiles)
             revisions += newrevs
             files += newfiles
 
@@ -1033,7 +1032,7 @@ def changegroup(repo, basenodes, source)
     # to avoid a race we use changegroupsubset() (issue1320)
     return changegroupsubset(repo, basenodes, repo.heads(), source)
 
-def _addchangegroupfiles(repo, source, revmap, trp, pr, needfiles, wasempty):
+def _addchangegroupfiles(repo, source, revmap, trp, pr, needfiles):
     revisions = 0
     files = 0
     while True: