$ git clone -n https://gitee.com/src-opencloudos-rpms/tar.git /var/lib/mock/dist-oc9-build-243329-83111/root/chroot_tmpdir/scmroot/tar
Cloning into '/var/lib/mock/dist-oc9-build-243329-83111/root/chroot_tmpdir/scmroot/tar'...
$ git fetch origin 5cf8bb8735ef07d6d56129396195a1ab99230a22:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tar
 * [new ref]         5cf8bb8735ef07d6d56129396195a1ab99230a22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5cf8bb8 import tar-1.35-6.tl4