$ git clone -n https://gitee.com/opencloudos-stream/dovecot.git /var/lib/mock/dist-ocs23-build-242494-22473/root/chroot_tmpdir/scmroot/dovecot
Cloning into '/var/lib/mock/dist-ocs23-build-242494-22473/root/chroot_tmpdir/scmroot/dovecot'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/dovecot
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e7dfd41 Rebuilt for loongarch release