$ git clone -n https://gitee.com/src-opencloudos-rpms/dovecot.git /var/lib/mock/dist-oc8-build-254555-84424/root/chroot_tmpdir/scmroot/dovecot
Cloning into '/var/lib/mock/dist-oc8-build-254555-84424/root/chroot_tmpdir/scmroot/dovecot'...
$ git fetch origin 777a4015bef99e583f787abe729c1eda2a7ae2f0:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/dovecot
 * [new ref]         777a4015bef99e583f787abe729c1eda2a7ae2f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 777a401 import dovecot-2.3.16-16.tl3.ap.1