040000 tree ec3f4a0b0d0a1a45b2255c28d782b73c3445d559	fortune_client
040000 tree 31371467213a56b27e697d5a60e6d93afea42372	fortune_server
040000 tree ec26ae8cbe64dab83081ef122c5917a3aa5ae26f	proto
040000 tree 6c2e4aedd2c9a1718301a1cdf69ea5887389156a	vgrpc