GitLab has been at least tracking federated instances as a wishlist item since 2018, and it was marked for a time as "Vision FY20": https://gitlab.com/gitlab-or

GitLab has been at least tracking federated instances as a wishlist item since 2018, and it was marked for a time as "Vision FY20": https://gitlab.com/gitlab-org/gitlab/-/issues/6468 https://gitlab.com/gitlab-org/gitlab/-/issues/6468 I doubt that GitHub would have much incentive to come to the table on any of this, but if GitLab can at least figure it out between instances of itself, it seems likely that sr.ht and BitBucket would be motivated to implement whatever the system is, and eventually social pressure would force GitHub to cooperate with it as well.