$ git clone -n https://src.fedoraproject.org/rpms/zork.git /var/lib/mock/f41-build-side-1-2810871-32923/root/chroot_tmpdir/scmroot/zork
Cloning into '/var/lib/mock/f41-build-side-1-2810871-32923/root/chroot_tmpdir/scmroot/zork'...
$ git fetch origin b4c7655c56bb8188724fe3c67a96d6faf5dc98c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zork
 * [new ref]         b4c7655c56bb8188724fe3c67a96d6faf5dc98c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4c7655 Migrate to SPDX license