Tell HN: Git hook to keep LLM signatures out of your commit history

3 points by akktor 92 days ago | 5 comments

I’ve noticed a trend where LLMs append Co-authored-by: [AI Name] to the end of commit messages. Even if you try to prompt it away, context drift or new sessions eventually lead to one slipping through into the codebase.

I’m using a git hook to prevent any of that from reaching my commits instead of relying on LLMs.

  #!/bin/sh
  if grep -qi "co-authored-by" "$1"; then
    echo "error: commit message contains 'Co-authored-by'. Commit rejected." >&2
    exit 1
  fi

bdangubic 92 days ago |

why do you want to hide the attribution unless you are forbidden from using LLM and trying to hide it from someone?! we have opposite rule, if LLM attributed any work on a commit the attribution must be added. if I saw this hook I would suspect some shaddy shit going on

akktor 92 days ago | |

I just don't want LLMs to put stuff I didn't ask for in my commit history. It's equivalent to some kind of free advertising that nobody asked for, in your projects.

> and trying to hide it from someone?!

I think that nowadays, by default, you automatically assume that something has been written with the help of AI, so I don't think this is a valid point or concern.

bdangubic 92 days ago | | |

this is not free advertising, this is you trying to lie about it and hide it.