You can’t clone a Bitbucket repo using GithHub Desktop directly. Instead you would have to:
- Clone the Bitbucket repo locally via command line.
- Add the cloned repository to your GitHub Desktop app.
After completing these 2 steps, you’ll be able to execute sync, push, pull, commit, and other git commands available in GitHub Desktop for your Bitbucket repository just as you would for any GitHub repository.
You will need your Bitbucket repository’s git URL as available on the Overview page of your repository: