$ git clone -n https://gitee.com/src-opencloudos-rpms/tar.git /var/lib/mock/dist-oc9-build-234908-82032/root/chroot_tmpdir/scmroot/tar
Cloning into '/var/lib/mock/dist-oc9-build-234908-82032/root/chroot_tmpdir/scmroot/tar'...
$ git fetch origin f396cd9d6d38f07932d43b067d3ebce5732922bc:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/tar
 * [new ref]         f396cd9d6d38f07932d43b067d3ebce5732922bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f396cd9 import tar-1.35-5.tl4