My house had an attached 2-car garage which was added after the house was finished. The inside of the garage wall shared with the house is covered with exterior cedar siding. I would like to remove that siding. ( I will use some of it to repair damaged siding on exterior walls. ) I believe that there is probably an exterior sheathing under the siding and that the wall is insulated, since it was originally an exterior wall. I don't know what would be best to material to use to replace it, or if it needs replacing. Maybe just paint it? It is just a garage with storage and workbench area, and I am not concerned about the finished look or matching other walls.

Anyone had similar experience and/or advice?
Appreciate your help.