short summary: I have a playbook from where I wanna start other playbooks hosted on Bitbucket. In short words: Got a server and want to clone repository on Bitbucket where are all the other playbooks which I want to run on the remote server.
You might want to try asking on the Ansible mailing list as this list is geared more towards discussion around AWX.
FWIW, the Ansible error:
fatal: [xxx.xxx.xxx.xxx]: FAILED! => {“reason”: “Unable to retrieve file contents\nCould not find or access ‘/home/username/git/playbookfolder/playbook.yml’ on the Ansible Controller.\nIf you are using a module and expect the file to exist on the remote, see the remote_src option”}