Note that the .zip file does not come with the .git directory in it (at least from BitBucket -- I don't know how github or gitlab behave in this respect) so there's no actual repo behind it; just ...

How to add a Git project to Bitbucket To import an existing project into Bitbucket, follow these steps: Create a Bitbucket project into which you’ll import the existing project. Copy the Bitbucket ...

Previously available on BitBucket Server, Git Large File Storage now reaches Bitbucket Cloud, Atlassian’s cloud-based code management solution, writes Atlassian engineer Szilard Szasz-Toth.