$ git clone -n https://src.fedoraproject.org/rpms/kblackbox.git /var/lib/mock/f41-build-side-1-3050302-37971/root/chroot_tmpdir/scmroot/kblackbox
Cloning into '/var/lib/mock/f41-build-side-1-3050302-37971/root/chroot_tmpdir/scmroot/kblackbox'...
$ git fetch origin 98b38286cfb7285b2922fa689dd21ea992996b64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kblackbox
 * [new ref]         98b38286cfb7285b2922fa689dd21ea992996b64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98b3828 24.08.2