Website rebuild: Oops. Need to backtrack, missed a step.

Well, it  probably ia an oops.

It's been a couple of years since my last rebuild, and I had vaguely remembered that setting up the .git account and repository didn't seem to do anything, although there is an invisible .git folder inside my website folder when I look into that folder from inside the program to show for it. 

So, having set up an account once, it didn't sink in that I'd need to do this again for *every* site I build. So I skipped it, when I started this lattest rebuild.

Now I've got a rebuilt site, and have realized that I probably may need to set this up. And the panel for doing it is gone, since I didn't do it at the outset.

The question is:

First; is this trip even necessesary? I don't recall doing this for the 2013 rebuild (and there is no such .git folder inside that site's folder). That site worked perfectly acceptably for nearly a decade. Do I even *need* that .git account. It isn't a commercial site, after all.

Second; is there a way to *retroactively* create such a repository in the new rebuild's folder. The folder is invisibe from anywhere outside the program, so I can't just drag it, or a copy of it over -- and I don't think I'd want to do that anyway. It's a different site, after all.

Third; could I simply create yet another site with a different name, set up the stupid .git account and repository there, and drag all of the assets and content from the rebuilt site into that one (and have it work)?

I should probably note that at some point I may need to pay someone to move the site into a more responsive format. Once I do that, I probably will not be able to keep maintining it myself, so I am in no hurry to do so. But there is no point in making the job harder for whoever might end up having to deal with it.