[crtasm]

It's true Yuzu did early access builds for patreons yes.

[sjs382]

Not just for Patreon supporters—they had nightly builds available on GitHub.

[crtasm]

They instructed Patreons to make use of an "early access key" to access EA builds.

Of course people shared them publicly, are you thinking of one of the unaffiliated github accounts that reposted them?