$ git clone -n https://gitee.com/src-opencloudos-rpms/bzip2.git /var/lib/mock/dist-oc9-build-45866-14592/root/chroot_tmpdir/scmroot/bzip2
Cloning into '/var/lib/mock/dist-oc9-build-45866-14592/root/chroot_tmpdir/scmroot/bzip2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/bzip2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 947a98c import bzip2-1.0.8-3.tl4