Search Git remote all branches for file contents

Question

Is it possible to search all of my Git remote branches for specific file contents (not just a file, but contents within them)?

My remotes are on GitHub, in case that

Answer 1

You can try this:

git grep 'search-string' $(git ls-remote . 'refs/remotes/*' | cut -f 2)

That will search all remote branches for search-string. Since the symbolic reference HEAD is mirrored, you may end up searching the same commit twice. Hopefully that's not an issue. If so, you can filter it out with:

git grep 'search-string' \
    $(git ls-remote . 'refs/remotes/*' | grep -v HEAD | cut -f 2)

If you need to dig through your entire history, you can also try:

git grep 'search-string' $(git rev-list --all)