Unable to access Bitbucket repository - Error 403

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.