git pull 报错 fatal: unable to access :OpenSSL SSL\_connect: SSL\_ERROR\_SYSCALL in connection to github.com:443

报错：
fatal: unable to access 'https://github.com/xxx你的地...': OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to github.com:443

解决：
git config --global --unset http.proxy
git config --global --unset https.proxy