When git-update-ref has hit the "Ref %s changed to %s" error, I just stare
at it, left puzzled. This patch attempts to reword that to a more useful
and less confusing error message.
Signed-off-by: Petr Baudis <pasky@suse.cz> Signed-off-by: Junio C Hamano <junkio@cox.net>