I admit I'm getting out of my knowledge here (it's been a while since I read gitcore-tutorial), but I think that's the "to-be-committed" commit object. So the i

I admit I'm getting out of my knowledge here (it's been a while since I read gitcore-tutorial), but I think that's the "to-be-committed" commit object. So the index file "points to" the object file that stores the state of the object you added.