$ git clone -n https://gitee.com/src-opencloudos-rpms/python-build.git /var/lib/mock/dist-oc9-build-122037-71877/root/chroot_tmpdir/scmroot/python-build
Cloning into '/var/lib/mock/dist-oc9-build-122037-71877/root/chroot_tmpdir/scmroot/python-build'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-build
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1fa2e2f import python-build-1.0.0-3.tl4