报错如下：
[15:08:30 root@localhost src]#git clone https://github.com/openresty/echo-nginx-module.git Cloning into 'echo-nginx-module'... error: RPC failed; result=35. HTTP code = 0 fatal: The remote end hung up unexpectedly
解决办法，将https//xxx 修改为git//xxx
[15:15:52 root@localhost src]#git clone git://github.com/openresty/echo-nginx-module.git Cloning into 'echo-nginx-module'... remote: Enumerating objects: 3025. done. remote: Counting objects: 100% (7/7), done. remote: Compressing objects: 100% (7/7), done. remote: Total 3025 (delta 1), reused 3 (delta 0), pack-reused 3018 Receiving objects: 100% (3025/3025), 1.16 MiB | 313.00 KiB/s, done. Resolving deltas: 100% (1625/1625), done.