At the morning our repository size was about 1.3GB, but now its 2.8GB and we can't work with it.
I can't imagine what should be commited to add a 1.5GB to our repository. And I think that this is the problem on your side.
Also, i've cloned repository to my computer and checked the size of .git folder. It's about 1.3GB. So, it still looks like a problem on your side.
Could you please check it?