View a file in a different branch without switching the branch

We can use the following command to see the content of a particular file on another branch:

$ git show branch:file

For example, `git show feature/tip:css/styles.css` shows the content of the file located at `css/styles.css` in the `feature/tip` branch.

You also can open the file in your favourite editor, Vim for example:

$ git show branch:file | vim -