$ git clone -n https://src.fedoraproject.org/rpms/kf6-kio.git /var/lib/mock/f42-build-862108-170665/root/chroot_tmpdir/scmroot/kf6-kio
Cloning into '/var/lib/mock/f42-build-862108-170665/root/chroot_tmpdir/scmroot/kf6-kio'...
$ git fetch origin 3033e7f68177d3854aef1b33559c882e8c603c31:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kio
 * [new ref]         3033e7f68177d3854aef1b33559c882e8c603c31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3033e7f 6.8.0