The code had "/pub/scm/linux/kernel/git/" hardcoded which was
too specific to the kernel project.
With this, a line in the .mailmap file:
# repo-abbrev: /pub/scm/linux/kernel/git/
can be used to cause the substring to be abbreviated to /.../
on the title line of the commit message.
Signed-off-by: Junio C Hamano <junkio@cox.net>