$ git clone -n https://gitee.com/src-opencloudos-rpms/attr.git /var/lib/mock/dist-oc9-build-40630-14589/root/chroot_tmpdir/scmroot/attr
Cloning into '/var/lib/mock/dist-oc9-build-40630-14589/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 1cfe26a import attr-2.5.1-3.tl4