#!/bin/sh

# post-checkout hook that changes timestamps on changed files
# to that one of the last commit (head) if branch was changed

prev_HEAD="$1"
new_HEAD="$2"
new_branch="$3"

if [ "$new_branch" = 1 ]; then
   commit_date="`git show --format='%cD' | head -1`" &&
   touch --date="$commit_date" `git diff --name-only HEAD~`
fi

exit 0