An WebExtension to prevent merging of a pull request that contains fixup! commits on GitHub (also Enterprise).
Now this extension is not published on extension store of Firefox and Chrome. So this extension should be added as a temporary add-on.
Open about:debugging and click Load Temporary Add-on then select manifest.json file.
Open chrome://extensions/ and click Load unpacked extension then select this directory.
After installation, you have to set personal access token that allows repo operations in add-on options view. Also you should set GHE domain and its personal access token when you use in GitHub Enterprise. This extension does not work if you forget to set them.
MIT