$ git clone -n https://gitee.com/opencloudos-stream/postfix-mta-sts-resolver.git /var/lib/mock/dist-oc9-epol-build-95023-59590/root/chroot_tmpdir/scmroot/postfix-mta-sts-resolver
Cloning into '/var/lib/mock/dist-oc9-epol-build-95023-59590/root/chroot_tmpdir/scmroot/postfix-mta-sts-resolver'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/postfix-mta-sts-resolver
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dc5e95 update