$ git clone -n https://src.fedoraproject.org/rpms/z88dk.git /var/lib/mock/f40-build-2046545-48881/root/chroot_tmpdir/scmroot/z88dk
Cloning into '/var/lib/mock/f40-build-2046545-48881/root/chroot_tmpdir/scmroot/z88dk'...
$ git fetch origin 8a807de4b68bb4a9046c3b9d73bf9fbe308a269c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/z88dk
 * [new ref]         8a807de4b68bb4a9046c3b9d73bf9fbe308a269c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a807de Set build_type_safety_c to 0 (#2166990)