Experimental build nag screen for own builds

After the latest pull, I'm getting a nag screen every time I launch RPCS3 which is annoying. 
I prefer doing my own builds from the latest source (with no modifications) over downloading pre-built binaries.
Tried re-downloading the entire source and rebuilding, still getting this nag.
What triggers this nag and what's the intention behind this ?

This nag was added in the commit 70d6a128942569b533b18eb7c678f6f0e80eff83

Experimental build warning has been a thing for many years, not anything recent.
It's being triggered unintentionally from a recent CI bug though

Not really a big deal, just wanted to ask because I don't know if this was added intentionally or not.
I've changed my build scripts and wrote a small program to patch git-version.h until this is fixed.