Good morning, I'm new to Sourcetree and I find myself in the situation shown in the image. If I click on HEAD or main in the left menu, it highlights the branch that I mistakenly created and then merged. Now, if I make changes to the code and commit them, I can't push them—it's as if I haven't made any changes to the code. When I try to pull from another PC, the last commit I download is exactly the one highlighted.