git-newer.pl:

Suppose you cloned a git repo which is updated every now and then,
and you want to be informed about new commits so you can run 'git
pull' and/or do whatever else is needed to keep up to date.  You can
somehow manually check every now and then --- or use this script to
do the check for you.




This program is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see
<http://www.gnu.org/licenses/>.