$ git clone -n https://gitee.com/src-opencloudos-rpms/jaxb.git /var/lib/mock/dist-oc9-build-127808-77015/root/chroot_tmpdir/scmroot/jaxb
Cloning into '/var/lib/mock/dist-oc9-build-127808-77015/root/chroot_tmpdir/scmroot/jaxb'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jaxb
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2d078c import jaxb-4.0.2-6.tl4