How to auto sync forked repositories in Bitbucket Cloud

Summary

Currently, Bitbucket Cloud supports manual syncing of forks. When the parent of the fork is ahead, a notification on the right sidebar "Sync (1 commit behind)" indicates that the fork is behind and provides a way to sync the changes. 

Solution

The following steps could be followed to sync the changes from the parent repository to the forked repository. 

• Add a remote upstream repository (Parent of the forked repository) that will be synced with the fork.

  1 $ git remote add parentrepo https://USERNAME@bitbucket.org/WORKSPACEID/REPOSLUG.git

• Fetch the branches and the commits from the parent fork repository.

  1 $ git fetch parentrepo

• Once the commits are fetched from the parent repository, check out the forked repository's local master/main branch.

  1 $ git checkout master

• Merge the changes from parentrepo/master into your local master branch and push the changes.

  1 2 $ git merge parentrepo/master $ git push