Clones can be triggered automatically when transitioning issues. To enable that you’ll have to add a Jira post function. How to add a post function is explained in the Atlassian documentation.
You can trigger a Deep Clone with Jira Automation by adding a Deep Clone post function to a (looping) transition.
In the post functions tab select “Deep Clone”
Add the “Deep Clone” post function
Set any necessary parameters
Publish the updated workflow
Now, a clone is created automatically every time the adapted transition is executed.
It’s also possible to add several “Deep Clone” post functions.
Note that Deep Clone won’t run the post function if it was triggered when creating another clone, avoiding endless cloning loops. This can happen if you configure a Deep Clone post function on the initial “Create” transition with the same target project.