$ git clone -n https://gitee.com/opencloudos-stream/jcuber.git /var/lib/mock/dist-oc9-epol-build-76018-52399/root/chroot_tmpdir/scmroot/jcuber
Cloning into '/var/lib/mock/dist-oc9-epol-build-76018-52399/root/chroot_tmpdir/scmroot/jcuber'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/jcuber
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f11c5ea package init