$ git clone -n https://src.fedoraproject.org/rpms/sddm-kcm.git /var/lib/mock/f42-build-862552-170850/root/chroot_tmpdir/scmroot/sddm-kcm
Cloning into '/var/lib/mock/f42-build-862552-170850/root/chroot_tmpdir/scmroot/sddm-kcm'...
$ git fetch origin d21f1feccd1ca10ceb9a60676f3e1024bf823d86:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sddm-kcm
 * [new ref]         d21f1feccd1ca10ceb9a60676f3e1024bf823d86 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d21f1fe 6.2.4