After struggling for 6 hours to make Jenkins work with Bitbucket https git (tip: you have to install an older version of git, not the latest) I said enough is enough, lets try something more professional. So comes the TeamCity. After installing the 851mb package on a fresh Windows server I click Create Project -> Pointing to Bitbucket Cloud repository -> Sign in to Bitbucket -> I enter my Bitbucket credentials and boom:
This integration is misconfigured. Contact the vendor for assistance.