familiarize yourself with Git, GitHub, and using version control systems (VCS) with IntelliJ.
How do you see the files changed within each commit from git log? A: git-show
How do you see the contents of what changed within each file from the git log? A: git log --patch
What does HEAD refer to in the context of git? (Not to be confused with the "HEAD<<<<" one observes within merge conflict) A: A reference to the last commit in the current branch