--force flag can be very dangerous, because it unconditionally
overwrites remote branch - if someone pushed new commits to the remote
repo after you last fetched/pulled, and you do push --force, you will
overwrite his commits without even knowing that you did that. Using
--force-with-lease is much safer because it only overwrites remote
branch when it points to the same commit that you think it points to.
Read more:
https://developer.atlassian.com/blog/2015/04/force-with-lease/