$ git clone -n https://gitee.com/src-opencloudos-rpms/appstream-data.git /var/lib/mock/dist-oc9-build-40607-14589/root/chroot_tmpdir/scmroot/appstream-data
Cloning into '/var/lib/mock/dist-oc9-build-40607-14589/root/chroot_tmpdir/scmroot/appstream-data'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/appstream-data
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b273c8 import appstream-data-36-3.tl4