I have branch1 and branch2 in a Git-tracked project. There were several commits made in branch2 ahead of branch1 in directories directory1 and directory2. I need to push all files commited to directory1 from branch2 to branch1 but not to push any files of directory2 from branch2 to branch1. How can I implement this operation?

More specifically, how can I pull changes from only directory1 from branch2 standing on branch1?