How can I delete a specific revision of a github gist?

Github has a help page about removing sensitive data:

As gists are just git repositories, you should be able to locally clone your gist, do the clean-up there and do a forced push to overwrite the github version with the cleaned repo.

Yes, after thinking about it: If <commit> is the commit you want to “remove”, do

 git rebase -i <commit>^

mark the line for <commit> as edit, save and quit.

git will set up the working directory to the state after you comitted <commit>. Fix the file, use git add and git commit --amend to fix the commit. Then do git rebase --continue. If the only thing, the next commit did, was to remove the sensitive data, it will probably be automatically dropped because it doesn’t contain any changes after the now-amended commit.

Then, do a git push -f to force the update (because it is now non-fast-forward, meaning it changes already published git history).

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