$ git clone -n https://gitee.com/src-opencloudos-rpms/python-productmd.git /var/lib/mock/dist-oc9-build-44541-14591/root/chroot_tmpdir/scmroot/python-productmd
Cloning into '/var/lib/mock/dist-oc9-build-44541-14591/root/chroot_tmpdir/scmroot/python-productmd'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/python-productmd
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94a5c73 import python-productmd-1.33-3.tl4