$ git clone -n https://src.fedoraproject.org/rpms/kdesdk-kioslaves.git /var/lib/mock/f42-build-side-1-3498296-45962/root/chroot_tmpdir/scmroot/kdesdk-kioslaves
Cloning into '/var/lib/mock/f42-build-side-1-3498296-45962/root/chroot_tmpdir/scmroot/kdesdk-kioslaves'...
$ git fetch origin 3e99d24b943b0baf559fb04a542f9c9f377ca250:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdesdk-kioslaves
 * [new ref]         3e99d24b943b0baf559fb04a542f9c9f377ca250 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e99d24 25.04.0