$ git clone -n https://gitee.com/opencloudos-stream/python-spec.git /var/lib/mock/dist-oc9-epol-build-95768-59690/root/chroot_tmpdir/scmroot/python-spec
Cloning into '/var/lib/mock/dist-oc9-epol-build-95768-59690/root/chroot_tmpdir/scmroot/python-spec'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/python-spec
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9cca1d9 update