$ git clone -n https://gitee.com/src-opencloudos-rpms/attr.git /var/lib/mock/dist-oc9-la64-build-132329-78829/root/chroot_tmpdir/scmroot/attr
Cloning into '/var/lib/mock/dist-oc9-la64-build-132329-78829/root/chroot_tmpdir/scmroot/attr'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/attr
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5c02c9 import attr-2.5.1-6.tl4