当我尝试安装Homebrew时,出现以下连接拒绝错误。请帮我解决这个问题。Mac OS X上的Homebrew安装无法连接到raw.githubusercontent.com端口443
$ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused