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docs/additional-material/git_workflow_scenarios/reverting-a-commit.md

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+# Revert a commit
+
+To revert a commit simply means to create a brand new commit that undoes all
+the changes made in a previous one. It is like doing a ```CTRL + Z ``` on git.
+
+Reversion is made easier in git because every commit you push to your remote repository has a unique alphanumeric key known as SHA(Secure Hash Algorithm) tied to it.
+So this means you can revert any commit as long as you have the SHA.
+But then, you have to be careful to reverse orderly so as not to mess your repository up.
+
+
+To pick out the SHA of the specific commit we want to undo, a log of all the commits we have made so far would come in handy.
+To get this, we would run the command:
+```git log --oneline ```
+Running the ```git log``` command alone would also give us the SHAs (in long form)
+However using the ```--oneline ``` flag tells git that we want it displayed in a concise (one line) manner for easy read.
+
+The first 7 characters displayed when you run this command is called the abbreviated commit hash.
+
+For example, here is what I get when I run ```git log --oneline ``` on this repository:
+```
+389004d added spacing in title
+c1b9fc1 Merge branch 'master' into tutorials
+77eaafd added tutorial for reverting a commit
+```
+
+So this shows that with ```git log --oneline```, we can fetch a list of all the commits made on the repository together with the first 7 characters of its SHA.
+
+Now, Let's assume I want to undo my commit of "added spacing in title", here are the steps I would take:
+
+*   Copy the SHA of the commit which, in this case is ```389004d```
+*   Then, run the command ```git revert 389004d```
+
+This would pop open my text editor and prompt me to edit the commit message.
+You can decide to leave the commit message as the default git message which starts with the word `Revert`
+or you can also decide to customize the message to your liking.
+
+*   Next, I will save and close the text editor.
+*   Return to the command line.
+*   Run ```git push origin <branch-name>``` to push the reverted changes to Github.
+
+And that is it, the change would be undone. In this case,  my repository would be reverted to how it looked like in ```c1b9fc1```