I believe radicle.dev (another federated forge) does this,

> Radicle’s Collaborative Objects (COBs) provide Radicle’s social primitive. This enables features such as issues, discussions and code review to be implemented as Git objects. Developers can extend Radicle’s capabilities to build any kind of collaboration flow they see fit.

yeah, it would be nice to have pages, issues, and pulls branches. git is an database after all.

Fossil has you covered!