$ git clone -n https://gitee.com/src-opencloudos-rpms/dovecot /var/lib/mock/dist-oc8-build-32548-9797/root/chroot_tmpdir/scmroot/dovecot
Cloning into '/var/lib/mock/dist-oc8-build-32548-9797/root/chroot_tmpdir/scmroot/dovecot'...
$ git reset --hard origin/oc8
HEAD is now at e491aff import dovecot-2.3.16-3.tl3