[jcahill]

I am a web archivist with an archival project on Svalbard that predates this GitHub initiative.

Additionally, large-scale github-specific projects like https://gharchive.org (formerly GitHub Archive) have existed for some time.

In my experience, code is more likely than not to be preserved in a stale revision, if at all.

The most common forms of preservation are (a) simple tarballing and (b) git bundles.