The branch is broken, the merge is messy, and the clock is running. You reach for two commands that can save the day: git checkout and git rebase. Used right, they cut through conflicts, clean history, and keep your repository sharp. Used wrong, they create chaos.
Git checkout moves your working directory to a different branch or commit. It swaps your codebase to match that point in history. This is how you switch features, debug old commits, or stage work before merging. In modern Git, you can also use git switch for branches, but git checkout remains core for jumping between commits and restoring files.
Git rebase rewrites history. Instead of merging, it places your commits on top of another base commit, creating a linear timeline. This keeps the project history clean, but it changes commit hashes—so avoid rebasing public branches others are working on. Use git rebase to sync your feature branch with main without the clutter of merge commits. This is critical when maintaining a readable commit log for code reviews and long-term maintenance.