In this workshop, participants will learn the basics of common Git commands used in various situations. This includes commands which help you examine repo history and state while also learning to manipulate repo history.
In this section, we will learn about commands that re-write history and understand when you should or shouldn't use them.
How Commits Are Made
Every commit in Git is a unique snapshot of the project at that point in time. It contains the following information:
Pointers to the current objects in the repository
Commit author and email (from your config settings)
Commit date and time
Commit message
Each commit also contains the commit ID of its parent commit.
Safe Operations
Git's data structure gives it integrity but its distributed nature also requires us to be aware of how certain operations will impact the commits that have already been shared.
If an operation will change a commit ID that has been pushed to the remote (also known as a public commit), we must be careful in choosing the operations to perform.
Guidelines for Common Commands
Command
Cautions
revert
Generally safe since it creates a new commit.
commit --amend
Only use on local commits.
reset
Only use on local commits.
cherry-pick
Only use on local commits.
rebase
Only use on local commits.
Reverting a Commit
Warning: Before you reverse the commit, it is a good idea to make sure you will not be inadvertently reversing other changes that were lumped into the same commit. To see what was changed in the commit, use git show SHA.
bryantson
commented
2 years ago 
Undoing commits
In this section, we will learn about commands that re-write history and understand when you should or shouldn't use them.
How Commits Are Made
Every commit in Git is a unique snapshot of the project at that point in time. It contains the following information:
Each commit also contains the commit ID of its parent commit.
Safe Operations
Git's data structure gives it integrity but its distributed nature also requires us to be aware of how certain operations will impact the commits that have already been shared.
If an operation will change a commit ID that has been pushed to the remote (also known as a public commit), we must be careful in choosing the operations to perform.
Guidelines for Common Commands
revertcommit --amendresetcherry-pickrebaseReverting a Commit