is there any way to auto merge branches created on jira project linked to bitbucket repository?

[Jose Rios]

When I create a task, bug or issue in jira-cloud I am also able to create a branch on the respository linked to this project based on this task named with the key of the project and a automatic incremental number for example EQ-20, I would like to automatic merge this branch to his parent (develop) in this case; when the task status be DONE.

I was reading this docs but looks like I can only do this with server products.