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

输入命令：
$ git pull origin main

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

解决方案：输入
git config --global --unset http.proxy