$ git clone -n https://gitee.com/src-opencloudos-rpms/maven-parent.git /var/lib/mock/dist-oc9-build-70765-47466/root/chroot_tmpdir/scmroot/maven-parent
Cloning into '/var/lib/mock/dist-oc9-build-70765-47466/root/chroot_tmpdir/scmroot/maven-parent'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/maven-parent
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3292bbf import maven-parent-37-4.tl4