"Also, soon after the Nov. 19 email (sometime in the first half of December 2008), Satoshi added Finney to Bitcoin’s repository on Sourceforge, a site for managing open-source projects similar to GitHub"

Previously Unpublished Emails of Satoshi Nakamoto Present a New Puzzle.
Michael Kapilkov
Nov 26, 2020
Updated Nov 30, 2020

https://www.coindesk.com/satoshi-nakamoto-hal-finney-emails