$ git clone -n https://src.fedoraproject.org/rpms/kf6-kio.git /var/lib/mock/f40-build-2725712-73116/root/chroot_tmpdir/scmroot/kf6-kio
Cloning into '/var/lib/mock/f40-build-2725712-73116/root/chroot_tmpdir/scmroot/kf6-kio'...
$ git fetch origin dc1c48f5eadcd97eb2c7b9ddc9d97a37333ca8b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kio
 * [new ref]         dc1c48f5eadcd97eb2c7b9ddc9d97a37333ca8b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc1c48f 6.1.0