$ git clone -n https://src.fedoraproject.org/rpms/kcm_systemd.git /var/lib/mock/f39-build-1988599-43354/root/chroot_tmpdir/scmroot/kcm_systemd
Cloning into '/var/lib/mock/f39-build-1988599-43354/root/chroot_tmpdir/scmroot/kcm_systemd'...
$ git fetch origin ff3ce1c4d78f34cae72c79d58c3197ef3d743e53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcm_systemd
 * [new ref]         ff3ce1c4d78f34cae72c79d58c3197ef3d743e53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff3ce1c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild