$ git clone -n https://gitee.com/src-opencloudos-rpms/jaxb-istack-commons.git /var/lib/mock/dist-oc9-build-70160-47398/root/chroot_tmpdir/scmroot/jaxb-istack-commons
Cloning into '/var/lib/mock/dist-oc9-build-70160-47398/root/chroot_tmpdir/scmroot/jaxb-istack-commons'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jaxb-istack-commons
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1386ed2 import jaxb-istack-commons-4.2.0-3.tl4