--- a/contrib/debugcmdserver.py	Mon Nov 09 09:58:44 2020 -0800
+++ b/contrib/debugcmdserver.py	Fri Nov 06 13:58:59 2020 -0800
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #
 # Dumps output generated by Mercurial's command server in a formatted style to a
 # given file or stderr if '-' is specified. Output is also written in its raw