Thank you very much! And great point. I think it‘s much simpler to understand for non native speakers and saves additional chars. Think of added and add.
On the other hand, I like thinking about the commit as a subject, that is adding or fixing something to or in the codebase currently, when viewing the commit later.
But I don‘t think its a great mistake to write in simple past tense, I just stick to the present tense for those two reasons