$ git clone -n https://gitee.com/src-opencloudos-rpms/jboss-parent.git /var/lib/mock/dist-oc9-build-46523-14592/root/chroot_tmpdir/scmroot/jboss-parent
Cloning into '/var/lib/mock/dist-oc9-build-46523-14592/root/chroot_tmpdir/scmroot/jboss-parent'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jboss-parent
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a60eb56 import jboss-parent-20-2.tl4