diff --git a/contrib/perf.py b/contrib/perf.py
--- a/contrib/perf.py
+++ b/contrib/perf.py
@@ -706,9 +706,9 @@
         fm.end()
 
 @command(b'perfchangegroupchangelog', formatteropts +
-         [(b'', b'version', b'02', b'changegroup version'),
+         [(b'', b'cgversion', b'02', b'changegroup version'),
           (b'r', b'rev', b'', b'revisions to add to changegroup')])
-def perfchangegroupchangelog(ui, repo, version=b'02', rev=None, **opts):
+def perfchangegroupchangelog(ui, repo, cgversion=b'02', rev=None, **opts):
     """Benchmark producing a changelog group for a changegroup.
 
     This measures the time spent processing the changelog during a
@@ -721,7 +721,7 @@
     opts = _byteskwargs(opts)
     cl = repo.changelog
     nodes = [cl.lookup(r) for r in repo.revs(rev or b'all()')]
-    bundler = changegroup.getbundler(version, repo)
+    bundler = changegroup.getbundler(cgversion, repo)
 
     def d():
         state, chunks = bundler._generatechangelog(cl, nodes)
diff --git a/tests/test-contrib-perf.t b/tests/test-contrib-perf.t
--- a/tests/test-contrib-perf.t
+++ b/tests/test-contrib-perf.t
@@ -143,12 +143,6 @@
   $ hg perfcca
   $ hg perfchangegroupchangelog
   $ hg perfchangegroupchangelog --version 01
-  Mercurial Distributed SCM (version 4.8+262-efd0f79246e3+20181122)
-  (see https://mercurial-scm.org for more information)
-  
-  Copyright (C) 2005-2018 Matt Mackall and others
-  This is free software; see the source for copying conditions. There is NO
-  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   $ hg perfchangeset 2
   $ hg perfctxfiles 2
   $ hg perfdiffwd