$ git clone -n https://src.fedoraproject.org/rpms/helvum.git /var/lib/mock/f41-build-1219634-22741/root/chroot_tmpdir/scmroot/helvum
Cloning into '/var/lib/mock/f41-build-1219634-22741/root/chroot_tmpdir/scmroot/helvum'...
$ git fetch origin 52a1dacfb085b7c6e536482f211d7b5392335ced:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/helvum
 * [new ref]         52a1dacfb085b7c6e536482f211d7b5392335ced -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52a1dac Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces