Suspecting builds built with mpbuild to differ from official builds on same tag

I think I have narrowed down and issue with [microdot](https://github.com/miguelgrinberg/microdot/discussions/304) due ESP32-C6 firmware being stock or custom built (using mpbuild). MicroPython 1.25.0 is lacking support for I2S so enabled it in https://github.com/micropython/micropython/pull/17644. I compiled it using mpbuild and my focus was on the I2S support. Now, later, I seem to think that there is a difference between the official firmware and the one I built that causes backend with microdot to not function properly. I've done 3 different builds using mpbuild and the issue in my backend seem to be the same: 1. tag/1.25.0 with I2S enabled 1. 1.26.0-preview with I2S enabled 1. tag/1.25.0 _without_ I2S enabled Is there a way to compare builds with the official firmware to see if there is any difference regarding the configuration?