$ git clone -n https://src.fedoraproject.org/rpms/kdesdk-kioslaves.git /var/lib/mock/f42-build-side-1-3533524-46362/root/chroot_tmpdir/scmroot/kdesdk-kioslaves
Cloning into '/var/lib/mock/f42-build-side-1-3533524-46362/root/chroot_tmpdir/scmroot/kdesdk-kioslaves'...
$ git fetch origin 6fc0026e018f69f560a744e3c6ca9faa4fa6942f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdesdk-kioslaves
 * [new ref]         6fc0026e018f69f560a744e3c6ca9faa4fa6942f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6fc0026 25.04.1