gitbackup currently has two operation modes.
The first and original operating mode is to create clones of only your git repository.
This is supported for Bitbucket, GitHub and Gitlab. It runs git clone (the first time) and then
subsequently git pull. You can also configure it to perform a bare clone instead. This means that
if you mess around your original repo, gitbackup will introduce the mess into your backup as well.
The second operating mode is only available for GitHub where you can create a user migration (including orgs) which you get back as a .tar.gz file containing all the artefacts that GitHub supports via their Migration API.
This is to make the API call to get the list of repositories.