$ git clone -n https://gitee.com/src-opencloudos-rpms/cyrus-imapd.git /var/lib/mock/dist-oc9-build-49868-14595/root/chroot_tmpdir/scmroot/cyrus-imapd
Cloning into '/var/lib/mock/dist-oc9-build-49868-14595/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 20fd6bc import cyrus-imapd-3.4.4-3.tl4