I'd be really curious to know why that's working for you and not me. I just tried restoring and none of my .git directories were included; just the working copy. I tried with both the web and desktop restore tool.
Deleting C:\Programdata\Backblaze\bzdata\bzexcluderules_mandatory.xml resolve the problem for me. Seems like at one point[1] they started excluding .git directories by default, got a bunch of backlash, reverted that change, but never changed the setting back for some users (like me).