I would like to add a case @elmart did not mention: if you are sure, those file changes don't mean anything, just discard them, after you closed your IDE. (For example you just opened the IDE for reading the code, or you just needed to recompile the project to use it, discarding won't break anything for your colleagues... well, sure, there is shitty proprietary cloud-operating software, which might stab you in the back, so you should be careful, when using SaaS.)