$ git clone -n https://gitee.com/tomcruiseqi/protobuf.git /var/lib/mock/dist-an23-build-461711-73780/root/chroot_tmpdir/scmroot/protobuf
Cloning into '/var/lib/mock/dist-an23-build-461711-73780/root/chroot_tmpdir/scmroot/protobuf'...
$ git fetch origin ec0de903d4cf7e9745d5d5fc1b72c27335f356b2:KOJI_FETCH_HEAD
From https://gitee.com/tomcruiseqi/protobuf
 * [new ref]         ec0de903d4cf7e9745d5d5fc1b72c27335f356b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec0de90 Update to 31.1