A sample job snippet for azure pipelines to keep GitHub forks synchronized. Assumes you have created a secret GitHub_Token variable in your pipeline

release-pipeline-job.yml

steps:
- bash: |
   git clone  https://betimbeja:${GitHub_Token}@github.com/BetimBeja/fake-xrm-easy
   cd fake-xrm-easy
   git remote add upstream https://github.com/jordimontana82/fake-xrm-easy
   git fetch upstream
   git merge upstream/master
   git push
  displayName: 'Synchronize with jordimontana82/fake-xrm-easy'
  env:
    GitHub_Token: $(Github_Token)