When working on a Git managed project, you can merge remote branches from within your Talend Studio in local mode.
Use the following procedure to merge a remote branch A to another remote branch B.
Check out the remote branch B to your Talend Studio as a local branch with the same branch name, by following the steps described in Checking out a remote branch as a local one.
Update the local branch B using the remote branch A as the source to pull from, by following the steps described in How to update a local branch (Git only).
Resolve any conflicts that occurred during the branch update, by following the steps described in How to resolve conflicts between branches (Git only).
Push your local branch B to the remote end, by following the steps described in How to push changes on a local branch to the remote end (Git only).