updating pymode repository error: server does not allow request

I run the following command:

 git submodule update --init --recursive

I got

error: Server does not allow request for unadvertised object 837ecd3d7a8597ab5f28bc83072de68e16470f1e
Fetched in submodule path 'submodules/pylama', but it did not contain 837ecd3d7a8597ab5f28bc83072de68e16470f1e. Direct fetching of that commit failed.

i sovled the problem by deleting the old pymode and reinstall that.