$ git clone -n https://src.fedoraproject.org/rpms/sddm-kcm.git /var/lib/mock/f41-build-side-1-2771244-32218/root/chroot_tmpdir/scmroot/sddm-kcm
Cloning into '/var/lib/mock/f41-build-side-1-2771244-32218/root/chroot_tmpdir/scmroot/sddm-kcm'...
$ git fetch origin ec41e99c03c8a688217016a03b7a4eb3650eb7c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sddm-kcm
 * [new ref]         ec41e99c03c8a688217016a03b7a4eb3650eb7c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec41e99 6.1.90