Due to an error in the mapping between perforce and git, several of the original repos had to be rebuilt.
As for releases: Releases are always done in their own branch, not as a tag to an existing branch. I.e., ironmaiden-foss is a development tree of whatever the next 8.0 release will be. ironmaiden-806-foss is the repository for the 8.0.6 release, ironmaiden-805-foss is the repository for the 8.0.5 release, etc. So if you want to look at what's being currently developed, you grab the development repository for that code line (helix-foss, ironmaiden-foss, main, etc). If you want the code for a specific release, then you grab the repository for that release.
Hope that helps,
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