I created a new branch feature1 and after completing a basic implementation, I merged it into the main branch. I then continued working on other features. After some time, I want to go back and improve feature1.

I would like to continue working on the original feature1 branch, but it’s now behind main.

Should I create a new branch for the improvements, or is there a way to update and use the original feature1 branch that is now behind main?