--- a/bench.py	Thu Aug 04 11:55:17 2016 +0800
+++ b/bench.py	Thu Aug 04 14:16:22 2016 +0800
@@ -48,7 +48,7 @@
         cmd += ['grep', '--all', 'version', filename]
     elif mark == 'grepallf':
         cmd += ['grep', '--all', '--follow', 'version', filename]
-    elif mark == 'stco':
+    elif mark == 'stcp':
         cmd += ['status', '--copies', filename]
     elif mark == 'diff':
         cmd += ['diff', '-r', 'tip~100:tip', filename]