You may see the following error whilst connecting to your Bitbucket repository using HTTPS.

``
To make a call, you need to use an app password. fatal: unable to access 'https://bitbucket.org/username/repo/': The requested URL returned error: 403
``

You could try cloning with SSH, rather than HTTPS. Details on how to change your connection to SSH can be found [here](https://www.deployhq.com/support/projects/updating-your-project-repository).