If you were using {{ site.fontawesome.name }} {{ site.fontawesome.minor_version }}, you should be able to just switch to {{ site.forkawesome.name }} {{ site.forkawesome.minor_version }} and get all the benefits from it.
If you were using npm or composer packages, replace the ones you were using by this {{ site.forkawesome.name }} ones. Or if you downloaded a static copy of {{ site.fontawesome.name }}, download the latest version of {{ site.forkawesome.name }} and
replace CSS and font files in your project and you should be good to go.
</p>
<p>
We paid special attention not to change unicode codepoints for the existing icons, nor changed the CSS class names or icon names from {{ site.fontawesome.name }} {{ site.fontawesome.minor_version }}.