Unable to show a Git tree in terminal

Question

The article has the following inputs and outputs

git co master
git merge [your_branch]
git push

upstream    A-B-C-D-E            A-B-C-D-E-F-G
                 \        ---->               \
your branch       C-D-E                        G

I am interested how you get the tree like-view of commits in your terminal without using Gitk or Gitx in OS/X.

How can you get the tree-like view of commits in terminal?

Answer 1

I suspect he drew that himself for the article.

Answer 2

how are you getting yellow commit hashes???