Here's a git mirror of the entire repo history up the the latest commit hash that I'm aware of. Compare against the commit hash on Google Webcache [1] for safety:
The copyright trolls are encircling Archive.org ever since they briefly offered the National Emergency Library. They need all the good vibes we can send them, please donate!
I give them money every month because their archives are essential to preserving our history. Not to mention, they have really saved my bacon before when I really needed to read some technical blog published a decade ago that has since been lost due to the website being reorganized or even being completely taken down.
Even though it takes a lot of bandwidth, I think preserving the source code on GitHub is an invaluable service and hope they continue to do so. I didn't know they were saving the zip file of every release, but I can understand why. It gives you point in time snapshots more easily and who knows how easy it will be to use a git repo from today 100 years from now. ZIP is a much simpler format if it needs to be reimplemented and is used all over the place.
Internet Archive seems to be heavily promoting Protocol Labs tech and File Coin specifically on their Twitter feed. I have donated small sums and ran a couple fundraisers via Facebook which benefited Internet Archive. The promo for File Coin is new. They pitch it as building a decentralized AWS, which I'm not sure if File Coin gets you 100% of the way there, but it's a start?
[1] - https://webcache.googleusercontent.com/search?q=cache:o7ilf8...