$ git clone -n https://src.fedoraproject.org/rpms/kf5.git /var/lib/mock/f40-build-786796-134617/root/chroot_tmpdir/scmroot/kf5
Cloning into '/var/lib/mock/f40-build-786796-134617/root/chroot_tmpdir/scmroot/kf5'...
$ git fetch origin ae3a08caf5f9d321bac4def92c28e181102b1fac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5
 * [new ref]         ae3a08caf5f9d321bac4def92c28e181102b1fac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae3a08c 5.115.0