This fixes https://pagure.io/pagure/issue/303

Perhaps it's an idea to move this to the BaseHook?
Since the code that happens here seems generic enough that pretty much every hook would need it.

that would require two more global variables, the file in and the file out but that should be doable yes

Perhaps use: line.lower().startswith('signed-off-by: ') to make sure that it's at the start of the line rather than just a string in the middle of the text?

Works for me, I didn't know if that was a requirement. Maybe we could add a .strip() in the mix, in case

Sounds good yeah

Looks good to me. 可

Thanks for the review :)