I got a project on github that has a few branches.
Production
Development
LG_Legacy
...
There are multiple user branches for collaborators to work on their own stuff and use pull requests to push their changes to the development branch, what I want to know is how do I update my current branch lg_legacy to replace it's contents with the development branch? I've tried to use the "Merge into current branch" option but nothing changed on my lg_legacy branch.