I'm not currently drawing anything like this but this type of roof intersect seems common and I have wondered from a rendering standpoint how different folks would draw it. Seems a rendering in the Softview class I took years ago had one of these type of roof intersects but of course that's not what the class was covering specifically.
If the masonry wall goes to the floor it will show if the garage interior is rendered but also I have had problems with walls connecting at corners in similar situations. My thinking is a masonry wall offset above the partition wall below and made to join the roof at the bottom. I know you run a risk of alignment problems with that solution. Create a new wall definition? I'm curious to hear other solutions.