Or maybe git-appraise https://github.com/google/git-appraise git-bug https://github.com/MichaelMure/git-bug
And recently discussed here https://radicle.xyz/
https://github.com/google/git-appraise
https://github.com/dspinellis/git-issue
Would be nice to have something more polished though.
It never seemed like the distributed "selling point" of Git (and Mercurial et al) really caught on. I remember trying to extoll it's virtues to our team at the time (pre-Github). No one source of truth as such, just everyone swapping changes as needed. It's kind of ironic that Git's most popular incarnation is based upon a centralised model.
Is it just a case of the distributed workflow just not being that useful for most people? Beyond the obvious example of Linux kernel development, of course!
Are people forgetting what life was like back in SVN days, when not having a connection to the server meant not being able to do many operations?