Same here, when comparing archives between Xcode 15.3 and 15.2, it seems in 15.3 these things are ending up in the frameworks directory of the .ipa, where previously they didn't.

+1, seeing this in Xcode 14.1 (14B47b). I see this when I'm not doing anything related to source control as well :( I ended up turning off Source Control under Xcode Preferences > Source Control > Enable Source Control. This happens even if I disable all the options under that, i.e. "Refresh local status automatically", "Fetch and refresh server status automatically" etc are all off.