$ git clone -n https://gitee.com/src-opencloudos-rpms/jaxb-stax-ex.git /var/lib/mock/dist-oc9-build-41789-14591/root/chroot_tmpdir/scmroot/jaxb-stax-ex
Cloning into '/var/lib/mock/dist-oc9-build-41789-14591/root/chroot_tmpdir/scmroot/jaxb-stax-ex'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jaxb-stax-ex
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5105ba2 import jaxb-stax-ex-2.1.0-2.tl4