$ git clone -n https://src.fedoraproject.org/rpms/kcm_wacomtablet.git /var/lib/mock/f42-bootstrap-3533975-46428/root/chroot_tmpdir/scmroot/kcm_wacomtablet
Cloning into '/var/lib/mock/f42-bootstrap-3533975-46428/root/chroot_tmpdir/scmroot/kcm_wacomtablet'...
$ git fetch origin 7ec4e8cb210ea50108acf2dec9201d448ebb36ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcm_wacomtablet
 * [new ref]         7ec4e8cb210ea50108acf2dec9201d448ebb36ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ec4e8c 6.3.5