直接搜xcode
https://developer.apple.com/download/all/?q=Command Line Tools
https://developer.apple.com/download/all/?q=Xcode

https://xcodereleases.com/?q=10.15 下载可能慢
catalina 支持 11.3.1xcode

直接搜xcode
https://developer.apple.com/download/all/?q=Command Line Tools
https://developer.apple.com/download/all/?q=Xcode

https://xcodereleases.com/?q=10.15 下载可能慢
catalina 支持 11.3.1xcode
