would it be possible to set up Action worker nodes in a way that we already have the SSH Host Keys for GitHub services (repos, Gists) etc. available in either
That would make workflows somewhat more straightforward when we e. g. need to fetch dependencies.
Also, it would be more secure than having to run
ssh-keyscan and just accept whatever keys we find. You should be in the best position to always provide the correct and up-to-date keys .