Need an old version to manage customizations

Hello,

I get a new website to manage (updates and so on), made by another web agency in 2019.
The website is currently using an old 4.5.7 Enfold version but they made customizations directly in the Javascript and PHP files of Enfold.
In fact, they didn’t use a child theme for it.
So I’d like to compare files with the original 4.5.7 version before updating to the last version.

Is it possible to get an old 4.5.7 version for me to manage theses customizations ?

Waiting for your answer,
Sincerely,
François