$ git clone -n https://gitee.com/src-opencloudos-rpms/mock-core-configs.git /var/lib/mock/dist-oc9-build-43053-14591/root/chroot_tmpdir/scmroot/mock-core-configs
Cloning into '/var/lib/mock/dist-oc9-build-43053-14591/root/chroot_tmpdir/scmroot/mock-core-configs'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mock-core-configs
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e572123 import mock-core-configs-37.8-3.tl4