source: timingandestimationplugin/branches/trac1.0-Permissions/scripts/git-post-receive

#!/bin/sh
#
# An example hook script for the post-receive event
#
# This script is run after receive-pack has accepted a pack and the
# repository has been updated.  It is passed arguments in through stdin
# in the form
#  <oldrev> <newrev> <refname>
# For example:
#  aa453216d1b3e49e7f6f98441fa56946ddcd6a20 68f7abf4e6f922807889f52bc043ecd31b79f814 refs/heads/master
#
# see contrib/hooks/ for an sample, or uncomment the next line (on debian)
#


TRAC_ENV="YOUR TRAC ENV HERE"
LOG="/dev/null"
echo "in git post commit: $TRAC_ENV" | cat >>$LOG

while read oval nval ref ; do
    if expr "$oval" : '0*$' >/dev/null
    then
        git-rev-list "$nval"
    else
        git-rev-list "$nval" "^$oval"
    fi | while read com ; do
    echo "posting a comment to trac" | cat >>$LOG
    /usr/bin/python /usr/share/trac/contrib/trac-post-commit.py \
        -p "$TRAC_ENV" \
        -r "$com" \
        -u "$(git-rev-list -n 1 $com --pretty=format:%an | sed '1d')" \
        -m  "$(git-rev-list -n 1 $com --pretty=medium | sed '1,3d;s:^    ::')"
    echo "DONE posting a comment to trac" | cat >>$LOG
    done
done

echo "Done with trac commit hook: $TRAC_ENV" | cat >>$LOG

git reset --hard 
echo "resetting repo working copy" | cat >>$LOG