Hello tuxnux, thanks for reaching out! 
These edits were made based on painted arrows visible in the cited Vantor Satellite Imagery dated 2025-09-30. Apple has an agreement with Vantor Hub (previously Maxar) to use their more recent imagery to edit OpenStreetMap, which is not publicly available for editing OpenStreetMap. These same arrows are also visible in Both Esri and Bing Imagery as well as Mapillary (https://www.mapillary.com/app/?lat=-23.028670549997614&lng=-46.96649926083791&z=19.338685502890893&pKey=1329934344083599&focus=photo&x=0.4826319418509767&y=0.6671409031871967&zoom=0) indicating the road has not since changed. Hopefully this helps clarify why these edits were made, have a nice day!