$ git clone -n https://gitee.com/src-opencloudos-rpms/jackson-parent.git /var/lib/mock/dist-oc9-build-58796-16463/root/chroot_tmpdir/scmroot/jackson-parent
Cloning into '/var/lib/mock/dist-oc9-build-58796-16463/root/chroot_tmpdir/scmroot/jackson-parent'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jackson-parent
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a8dece import jackson-parent-2.14-3.tl4