The tags from v6.0.9 to v6.1.5 currently all point to the same commit because I didnt push the actual development history to GitHub yet.
I was developing locally and only uploaded the source snapshots as release archives, which makes the tags look incorrect or “fictional”.
The ISOs are built from newer code, but that code hasn’t been pushed to the repo yet — that’s why the tags don’t match the releases. And the newer code is based off the older code.