$ git clone -n https://gitee.com/src-opencloudos-rpms/boost.git /var/lib/mock/dist-oc9-build-40739-14591/root/chroot_tmpdir/scmroot/boost
Cloning into '/var/lib/mock/dist-oc9-build-40739-14591/root/chroot_tmpdir/scmroot/boost'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/boost
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11526ca import boost-1.79.0-1.oc9