$ git clone -n https://gitee.com/src-opencloudos-rpms/yelp.git /var/lib/mock/dist-oc9-build-45660-14591/root/chroot_tmpdir/scmroot/yelp
Cloning into '/var/lib/mock/dist-oc9-build-45660-14591/root/chroot_tmpdir/scmroot/yelp'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/yelp
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1b21b5 import yelp-42.2-3.tl4