When you use Git, you have powerful tools to help you fix mistakes. Imagine you are playing a board game and you make a move you regret. With Git, you can use commands like git checkout and git revert to undo that move. git checkout lets you look at or return to an earlier version of your project, as if you are stepping back to a previous turn in the game. git revert is like taking back a single move without disturbing the rest of your progress. Both commands are designed to help you recover from errors and keep your project on track.

# Go back to a previous version using checkout
git checkout abc1234

When you use git checkout followed by a commit ID, you are telling Git to show you your project exactly as it was at that moment. It's like pulling out an old photo and seeing everything just as it used to be. You can explore the files, see what changed, and even start working from that point if you want. However, just like looking at an old photo doesn't change the present, checking out an old commit doesn't erase your history—it just lets you view or temporarily use an earlier version.

# Undo a specific change with revert
git revert abc1234