$ git clone -n https://gitee.com/src-opencloudos-rpms/execstack.git /var/lib/mock/dist-oc9-build-120717-71425/root/chroot_tmpdir/scmroot/execstack
Cloning into '/var/lib/mock/dist-oc9-build-120717-71425/root/chroot_tmpdir/scmroot/execstack'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/execstack
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55b70c6 import execstack-0.5.0-8.tl4