Hi, I had the same problem. In my case I have a private repository on github.com and Git works fine on my terminal, but Xcode Cloud didn't recognize the branch for the same reason. Finally, I discovered that selecting Settings -> Source Control -> Git crashes Xcode for the following reason:
DVTSourceControlGitXPCClient.complete(with:context:) + 288
So, I downgraded Xcode to Xcode 16, everything works fine now. The environments to be reproduced are macOS 15.3.1 (24D70), and Xcode 16.2.
Topic:
Developer Tools & Services
SubTopic:
Xcode Cloud