How to use a different email address in Git in sub directories

Motivation

I want to override my personal email address I use for Git with my work email address in my work directory without manually changing it each time.

Create a config file in the work directory

touch ~/path/to/work/directory/.gitconfig

# any customization/overrides can be added here
[user]
        name = Clarice Bouwer
        email = [e-mail]

Update ~/.gitconfig

[includeIf "gitdir:~/path/to/work/directory/"]
    path = ~/path/to/work/directory/.gitconfig

Verify

cd ~/
git config user.email # should be your default config email

cd ~/path/to/work/directory
git config user.email # should be your override email

Based on Stack Overflow: Set Git config values for all child folders and Alvin Alexander: Git show change username and email address.