#!/bin/bash
set -e

IFS=$'\n'
files=( $({ git ls-files | xargs -n1 dirname | sort -u && git ls-files; } | sort -r) )
unset IFS

for f in "${files[@]}"; do
	if [ ! -e "$f" ]; then
		# don't try touching files that don't exist
		continue
	fi
	stamp="$(git --no-pager log -1 --format='format:%ai' -- "$f")"
	touchFormat="$(date --date="$stamp" +'%Y%m%d%H%M.%S')"
	touch --no-dereference -t "$touchFormat" "$f"
done