#!/bin/sh
set -e
NEW="$1"; shift

CUR="$(git symbolic-ref HEAD|sed 's,^refs/heads/,,')"
git branch -f "temp/$CUR"
git checkout "temp/$CUR"
git ls-files --deleted --modified --others -z \
    --exclude-from=.git/info/exclude \
    --exclude-per-directory=.gitignore \
    | git update-index --add --remove -z --stdin

if [ "$(git diff HEAD)" ]; then
    git commit -m 'TEMPORARY'
fi

if git rev-parse --verify "temp/$NEW" 1>/dev/null 2>/dev/null; then
    git checkout "temp/$NEW"
    git reset --soft "$NEW"
fi
git checkout "$NEW"