$ git clone -n https://gitee.com/src-opencloudos-rpms/python-unittest2.git /var/lib/mock/dist-oc9-epol-build-55281-14778/root/chroot_tmpdir/scmroot/python-unittest2
Cloning into '/var/lib/mock/dist-oc9-epol-build-55281-14778/root/chroot_tmpdir/scmroot/python-unittest2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-unittest2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a30ed7a import python-unittest2-1.1.0-2.tl4