Getting an older version (Enfold 4.3) for development purpose

I’m fixing a website using Enfold 4.3.
Unfortunately, the theme core files have been edited (no child theme used), they contains a few important custom function I can’t clearly identify so the theme was never updated.
Before updating the core theme and building a brand new child theme, I need to understand which modifications were made, so I need to compare the code with the old version of Enfold.
Is there a repository where to download version 4.3 (I have the client’s regular license) ?

Cheers
Enea