How to run a gitlab-ci.yml job only on a tagged branch?

Question

How do I run a .gitlab-ci.yml job only on a tagged Master branch?

job:
  script:
  - echo \"Do something\"
  only:
  - master
  - tags

The

Answer 1

I made it work and this is my working code snippet, all others were not working for me

only:
 - tags  # please mention the 's' compared to Sergio Tomasello's solution
except:
 - branches

I use 11.4.3