Repainting Responsibility After Common Property Repair

Due to foundation movement, several wall cracks in the  internal common property  walls of two units will need crack stitching. This requires render removal, helli-bar inserts and re-rendering.

The walls then will need to be repainted.

I am unsure as to who will be responsible for the repaint.

Usually, the owner is responsible for the internal painting but I am wondering whether the O.C is responsible as it is the one carrying out the repair and I assume must return it to its previous state?