Using a branch description in a commit message

In Chapter 3, Branching, Merging, and Options, we mentioned that you can set a description on your branch, and this information can be retrieved from a script using the git config --get branch.<branchname> description command. In this example, we will take this information and use it for the commit message.

We will be using the prepare-commit-msg hook. The prepare-commit-msg hook is executed every time you want to commit, and the hook can be set to anything you wish to check, before you actually see the commit message editor.

Getting ready

We need a clone and a branch to get started on this exercise, hence we will clone jgit again to the chapter7.5 folder, as follows:

$...