@cwebber @clacke While git is, other “metadata” probably not. Things like issues, comments, PRs if there were such things there.

I’m not sure if Mastodon is completely portable. Can users export/import their data without losing anything?

@pointlessone @cwebber Yes. This is why I am interested in git-hosted issues. gitlab, gitea/gogs, github, git-ssb, and the deceased gitorious all have/had their own issue format which could not easily be extracted and put into another system. Had the issues been created with something like http://www.bugseverywhere.org/ (ironically, it still claims gitorious as its source home) it would just have been a matter of migrating (cloning, pushing) the repo.
Matěj Cepl* forked #bugseverywhere to https://gitlab.com/bugseverywhere/bugseverywhere at the point of #gitoriocalypse, but it has seen only sporadic commits, mostly spelling fixes in the docs, since the first small spurt.

* https://matej.ceplovi.cz/
Here is the background to dist-bugs*! https://lwn.net/Articles/281849/

> Update: Several of us have started a project and mailing list to discuss distributed bug tracking further. The web site is http://dist-bugs.kitenet.net/

* These days at https://dist-bugs.branchable.com/ , but the older URL redirects there.