$ git clone -n https://gitee.com/src-opencloudos-rpms/python-backcall.git /var/lib/mock/dist-oc9-build-71552-47570/root/chroot_tmpdir/scmroot/python-backcall
Cloning into '/var/lib/mock/dist-oc9-build-71552-47570/root/chroot_tmpdir/scmroot/python-backcall'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-backcall
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0559995 import python-backcall-0.2.0-1.tl4