--- a/contrib/perf.py	Tue Nov 20 10:55:20 2018 +0000
+++ b/contrib/perf.py	Tue Nov 20 17:44:24 2018 +0000
@@ -540,7 +540,7 @@
 
 @command(b'perftags', formatteropts+
         [
-            (b'', b'clear-revlogs', True, b'refresh changelog and manifest'),
+            (b'', b'clear-revlogs', False, b'refresh changelog and manifest'),
         ])
 def perftags(ui, repo, **opts):
     opts = _byteskwargs(opts)