How to gain experience as a UX Designer?

As a self taught frontend developer, it was clear for me on how to gain "experience" as a web dev without having a job (in order to get a job) by participating in a Hackathon or open source, working on a project with others using git and Scrum, write articles, etc.

Especially working with git on a project with another person (or open source) you can gain so much of real world experience (talking about Git Workflow, creating Issues and Projects in GitHub, using Scrum etc).

I wonder now, how would someone gain this kind of „experience” as a UX Designer? (Besides creating projects)? What could be compared especially to working with Git/GitHub, workflows and Scrum?