This action takes the contents of a provided directory and synchronizes it with your repository's wiki. This allows, for example, pull requests for the wiki.

By default, it will use the .github/wiki directory.

You probably want to commit your wiki in its initial state before using this action. This is because this action will commit all differences between the wiki and the .github/wiki (or other specified directory) contents.

git clone https://github.com/octocat/my-repo.wiki.git .github/wiki
rm -rf .github/wiki/.git
git add .github/wiki
git commit -m "Add wiki to repo"

Unfortunately, ${{ github.token }} does not have access to updating wiki repositories, so it is necessary to create a new PAT.

Simple example usage can be found in this workflow file.