Opening the Reflect Viewer with 2020.3.30f1

I am trying to open the Reflect viewer project I cloned off Github. It says to open with 2020.3.3f1 but I can't find that Unity version in the downloads archive. Only 2020.3.30f1. So I tried opening it with this version but Unity is saying:

"Opening Project in Non-Matching Editor Installation

Your project was last saved with a different version of Unity.

The saved project (2020.3.3f1) does not match the launched editor (2020.3.30f1).

This may require re-import. Please be aware that opening in an older version is unsupported.

Note that if a build target installation is missing, this may also cause a re-import"

Should I continue? Or how do I find the version of Unity without the '0' in the name?

Thanks!

 

Update: I did find and download 2020.3.3f1 after I googled it. For some reason it wasn't in the version archive.