git-pack-changes

#!/bin/sh
usage()
{
    echo "Usage: `basename $0` [-vh] pack_name"
    echo "       Find all modified files since current branch and master"
    echo "       diverged and put them in \$pack_name.tar.gz"
}

QUIT=0
verbose=0
while getopts "vh" OPTIONS ; do
    case ${OPTIONS} in
        h|-help)
            usage
            QUIT=1
            exit;;
        v|-verbose)
            verbose=1;;
        ?)
            QUIT=1
    esac
done
if [ $QUIT = 1 ]; then
    exit
fi
shift $((OPTIND-1)); OPTIND=1
pack_name=$@
current_branch=`git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'`
merge_base=`git merge-base $current_branch master`
files=`git diff --stat $merge_base | head -n -1 | cut --fields=2 -d " "`
if [ $verbose ]; then
    echo "Packing files:"
    for file in $files; do
        echo "  $file";
    done
fi
tar -czf $pack_name.tar.gz $files
echo "Wrote $pack_name.tar.gz"