rsync the working directory to a directory under ~/.forwardgit/ then run the git command in that directory.

forwardgit.sh

#!/bin/bash

# Simply wraps git to rsync the current folder under ~/.forwardgit/ then
# runs the git command in that folder.

# The reason: https://plus.google.com/+nicerobot/posts/YDAaKbaiGRw

# TODO try this with gin https://github.com/nicerobot/gin

# set -x
FGITD=${HOME}/.forwardgit
DESTD=${FGITD}/$(basename ${PWD})
[ -d ${DESTD} ] || {
        mkdir -p ${DESTD}
}

# If there's no .gitignore, but there is a .forwardgit script with an ignore variable,
# use the ignore value as the parameter to gitignore.io.

[ ! -f .gitignore -a -f .forwardgit ] && (
        source .forwardgit
        [ "${ignore}" ] && {
                curl http://gitignore.io/api/${ignore} > .gitignore
        }
)

rsync -vazu --delete --exclude .git . ${DESTD}/
cd ${DESTD} || exit ${LINENO}

git ${@}
exit ${?}