$ git clone -n https://gitee.com/src-opencloudos-rpms/libxmlb.git /var/lib/mock/dist-oc8-build-246030-83421/root/chroot_tmpdir/scmroot/libxmlb
Cloning into '/var/lib/mock/dist-oc8-build-246030-83421/root/chroot_tmpdir/scmroot/libxmlb'...
$ git fetch origin 1f2bc13fbbfdeb231f290418cabb5329d95bf959:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libxmlb
 * [new ref]         1f2bc13fbbfdeb231f290418cabb5329d95bf959 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f2bc13 import libxmlb-0.3.28-1.tl3