[fahhem]

I agree, we work on Reviewable, which uses those same blobs.

However, we add tags to commits we're referencing, just in case someone at GitHub gets around to implementing garbage collection!

[jacobegold]

They must have refs on the internal git servers -- they need them for the "force pushed from X to Y" timeline events

[bongobingo1]

I've definitely clicked those links through to 404s.

[fahhem]

You're right, though I think that changed recently? I vaguely remember only the last force push showed up, but now I see more than one so :shrug: