Look in the 'More downloads' tab https://download.developer.apple.com/Developer_Tools/Xcode_14.3.1/Xcode_14.3.1.xip

I am seeing this same crash when running XCode 16 on a macOS 14.5 (sonoma) host. The minimum deployment for the project is macOS 10.13. There is nothing in the Xcode 16 release notes about macOS 13.0 being a required minimum deployment. so I don't think that is a solution.

This problem appears to be fixed in XCode 16 Beta 2. I don't see any mention of the problem in the release notes but I have successfully compiled and run an application on an intel Mac with macOS Sonoma 14.5 and Xcode 16 Beta 2.

getifaddrs() will return the IPv4 & IPv6 addresses of each interface. This in most cases, especially for IPv4, will be an address on the users local network. If you're after the users public IP address you will have to use some other method, such as visiting one of the many sites on the internet, via an http(s) request, that will reply with the connecting address.

I had a similar experience, although I did not see the dialog you posted. In my case it was reported as an ssh failure. Like you, I could do a git push from the command line but Xcode was failing. To get it working I edited ~/.ssh/known_hosts and deleted all entries to do with my git server. I then manually logged into the git server (via ssh) and when prompted accepted the connection, adding the keys to known_hosts. Following that Xcode "push" was working again. I have no idea as to why the failure occurred but I am happy that it is working now.