$ git clone -n https://gitee.com/src-opencloudos-rpms/cyrus-imapd.git /var/lib/mock/dist-oc9-la64-build-133216-78829/root/chroot_tmpdir/scmroot/cyrus-imapd
Cloning into '/var/lib/mock/dist-oc9-la64-build-133216-78829/root/chroot_tmpdir/scmroot/cyrus-imapd'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/cyrus-imapd
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00f32d6 import cyrus-imapd-3.4.8-4.tl4