Using git log to visually format or graph all branches
Git lets you see the commit messages in several ways using the git log command but sometimes that is not enough.
To see a simple one line listing with the last few digits of the commit hash, use
git log --oneline
To see an tree of the branches made using ascii, use
git log --graph --oneline --decorate --all
If you are on a mac/windows, one of the easiest ways to visualize the trees is using the extremely rich built in visual tool — gitk.