Git Step By Step - Step 2: Go Back in Time

Scenario 1: discarding unstaged changes

You are working on a certain branch, and after your last commitment, you have made some changes which you haven't staged yet, now, you want do abandon those changes.

Scenario 2: go back to a prior commitment

You need to know the hash code of the commitment you want to go back to, you can get it by running log command:

Or you can make your query more specific:

Now you know how to identify one certain commitment, then you can run reset command to go back to a previous commitment: