$ git clone -n https://gitee.com/src-opencloudos-rpms/jdom2.git /var/lib/mock/dist-oc9-build-127848-77037/root/chroot_tmpdir/scmroot/jdom2
Cloning into '/var/lib/mock/dist-oc9-build-127848-77037/root/chroot_tmpdir/scmroot/jdom2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jdom2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5aae5de import jdom2-2.0.6.1-7.tl4