Bring back an assload of technology, fill hard drives with:

• Sci-hub articles
• All of Wikipedia
• List of known Nazi & American spies
• Newer theory
• Full modern GNU/Linux source code/history,
• As many FOSS packages as I can fit
• Everything else I can scrape off GitHub
• Every tech spec and data sheet I can find online
• Designs for modern firearms
• Human genome data

and give it to the early Stalin era Soviet Union