$ git clone -n https://gitee.com/src-opencloudos-rpms/jss.git /var/lib/mock/dist-oc9-build-46548-14592/root/chroot_tmpdir/scmroot/jss
Cloning into '/var/lib/mock/dist-oc9-build-46548-14592/root/chroot_tmpdir/scmroot/jss'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jss
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3484d18 import jss-5.3.0-2.tl4