b5eead Add a way to block non fast-forwardable commits on all branches

Authored and Committed by Pierre-Yves Chibon 6 years ago
    Add a way to block non fast-forwardable commits on all branches
    
    Fixes https://pagure.io/pagure/issue/1988
    
    Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr></pingou@pingoured.fr>