You need to amend the commit (press commit and then choose amend from the commit options above the commit message).
Afterwards, you need to force push to the server, because you are rewriting history. You cannot do this with SourceTree and the server might also stop you from doing it, because it is a potentially destructive operation.
Yes, and if other users have pulled your changes, their workflow will be disrupted as well. Stackoverflow already has information on how they can recover. Please make sure to read both answers to that question: http://stackoverflow.com/questions/6898317/git-pull-analogous-to-opposite-of-git-push-f
Supported Platforms macOS Windows We recently introduced support for additional hosting services such as GitHub Enterprise, GitLab (Cloud, Community Edition, Enterprise Edition), and...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs