I evaluated it again a couple of weeks ago and there are basically no differences right now (besides a few cosmetic ones) because the hard fork happened just a few months ago. Stick on 1.22 for the time being, it's the last version from which Forgejo supports in-place upgrades. You'll have to transfer data half-manually or perform deep surgery on the database if you upgrade past 1.22 and then decide to switch forges.

Although the next version of gitea should include support for full mirroring from GitHub (so periodic synchronization of new issues, PRs, etc), not just (code mirroring XOR one-off full copy) like it does right now. This might be of interest to you.