revert a commit

I’ve recently committed a cardinal sin of pulling a merge without checking. And then, I had to try to revert back to my original commit. However, I also encounter an error saying non-fast-forward. Hence, you have to do the following steps for a correct revert

git revert {commit_id}
git push origin -f

After typing in your password, you should be reverted to the original state of the commit ID.

Note: To check your commit_id, on the right-hand side of Rstudio, you can see a clock next to the green up arrow. In the changes tab, you should see the column SHA, which is the string of the commit id that you want to get.