Possible to download 1.1?

After upgrading to 1.2, something has broken on my site. I am using a child theme and I *thought* the only changes I made were to the child theme. But it was a lot of playing around so I might have done something to the original twentytwenty theme files.

Is there a place to download the 1.1 version. I thought I would compare what I have now with a clean 1.1 version. But I can only find a place to download individual files. Is there a repository for old versions where the whole thing can be downloaded?