$ git clone -n https://gitee.com/src-opencloudos-rpms/xalan-j2.git /var/lib/mock/dist-oc9-build-51813-14595/root/chroot_tmpdir/scmroot/xalan-j2
Cloning into '/var/lib/mock/dist-oc9-build-51813-14595/root/chroot_tmpdir/scmroot/xalan-j2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/xalan-j2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9cb73b import xalan-j2-2.7.2-2.tl4