$ git clone -n https://src.fedoraproject.org/rpms/kcm_systemd.git /var/lib/mock/f41-build-side-1-3050293-37971/root/chroot_tmpdir/scmroot/kcm_systemd
Cloning into '/var/lib/mock/f41-build-side-1-3050293-37971/root/chroot_tmpdir/scmroot/kcm_systemd'...
$ git fetch origin 7a634d5a5bc026d677c9cfab7b7abebc32d1a051:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcm_systemd
 * [new ref]         7a634d5a5bc026d677c9cfab7b7abebc32d1a051 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a634d5 convert GPLv2+ license to SPDX