git clone 设置临时的 proxy
export ALL_PROXY=socks5://127.0.0.1:1080
git clone --depth 1 https://github.com/xxx/xxx.git
unset ALL_PROXY
export ALL_PROXY=socks5://127.0.0.1:1080
git clone --depth 1 https://github.com/xxx/xxx.git
unset ALL_PROXY