$ git clone -n https://src.fedoraproject.org/rpms/crack-attack.git /var/lib/mock/f41-build-side-1-2633566-25936/root/chroot_tmpdir/scmroot/crack-attack
Cloning into '/var/lib/mock/f41-build-side-1-2633566-25936/root/chroot_tmpdir/scmroot/crack-attack'...
$ git fetch origin 9ebef851a28e9270a78c8ac50f6b6b0a4cd67836:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crack-attack
 * [new ref]         9ebef851a28e9270a78c8ac50f6b6b0a4cd67836 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ebef85 convert GPLv2+ license to SPDX