$ git clone -n https://src.fedoraproject.org/rpms/libmad.git /var/lib/mock/f40-build-2237871-53551/root/chroot_tmpdir/scmroot/libmad
Cloning into '/var/lib/mock/f40-build-2237871-53551/root/chroot_tmpdir/scmroot/libmad'...
$ git fetch origin 5f0411110b750df538e001452d0b253e12369b8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmad
 * [new ref]         5f0411110b750df538e001452d0b253e12369b8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f04111 SPDX Migration