问RestBed克隆从github失败

EN

$ git submodule update --init --recursive
Submodule 'dependency/asio' (https://github.com/corvusoft/asio-dependency) registered for path 'dependency/asio'
Submodule 'dependency/catch' (https://github.com/corvusoft/catch-dependency) registered for path 'dependency/catch'
Submodule 'dependency/openssl' (https://github.com/corvusoft/openssl-dependency) registered for path 'dependency/openssl'
Cloning into '${HOME}/restbed/dependency/asio'...

error: RPC failed; curl 56 SSL read: errno -5961
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed
fatal: clone of 'https://github.com/corvusoft/asio-dependency' into submodule path '${HOME}/restbed/dependency/asio' failed
Failed to clone 'dependency/asio'. Retry scheduled