$ git clone -n https://gitee.com/src-opencloudos-rpms/xrdb.git /var/lib/mock/dist-oc9-build-131847-78729/root/chroot_tmpdir/scmroot/xrdb
Cloning into '/var/lib/mock/dist-oc9-build-131847-78729/root/chroot_tmpdir/scmroot/xrdb'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/xrdb
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf673dd import xrdb-1.2.2-3.tl4