$ git clone -n https://gitee.com/src-opencloudos-rpms/cyrus-imapd.git /var/lib/mock/dist-oc8-build-100203-63746/root/chroot_tmpdir/scmroot/cyrus-imapd
Cloning into '/var/lib/mock/dist-oc8-build-100203-63746/root/chroot_tmpdir/scmroot/cyrus-imapd'...
$ git fetch origin f2d1b1fe740eed71580b48c44f51630253a1d206:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/cyrus-imapd
 * [new ref]         f2d1b1fe740eed71580b48c44f51630253a1d206 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2d1b1f import cyrus-imapd-3.0.7-26.tl3