$ git clone -n https://src.fedoraproject.org/rpms/kf6-kidletime.git /var/lib/mock/f38-build-side-42-init-devel-1407342-31305/root/chroot_tmpdir/scmroot/kf6-kidletime
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1407342-31305/root/chroot_tmpdir/scmroot/kf6-kidletime'...
$ git fetch origin f594e145ef76b9ab23e7e08bc5bf8dc860bf00df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kidletime
 * [new ref]         f594e145ef76b9ab23e7e08bc5bf8dc860bf00df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f594e14 Added the README