$ git clone -n https://gitee.com/src-opencloudos-rpms/python3 /var/lib/mock/dist-oc8-build-58250-16258/root/chroot_tmpdir/scmroot/python3
Cloning into '/var/lib/mock/dist-oc8-build-58250-16258/root/chroot_tmpdir/scmroot/python3'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python3
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a042840 add  'opencloudos'