Installing git through .ebextensions on Elastic Beanstalk

I'm getting an error deploying to Elastic Beanstalk, because there is no git on the instance. One of the dependencies in my package.json is dependant on a git repository and needs to git clone. Git is not installed on the instances. I tried installing it through .ebextensions .conf file while deploying, through yum, but when I ssh into the instance it's not there.

Question is: what is the correct way to install and have git on a Linux instance running on Elastic Beanstalk before npm install is called on that instance?