Pip install a pull request

See steps in description:
Here I am pip installing a pull request from a forked repository(and on another branch) into master of the original repository.

1. git pull the default repo and cd into it.
2. git remote add upstream [the repo you want to merge].
3. git pull upstream [the branch you want to merge into yours]. This can also be done with git fetch and git merge. If you are merging into a different branch then master like I am doing in this video make sure you checkout to that branch first.
4. pip install -e [the directory of the repo/should be current directory if you're in the same terminal session]

[sebastiangeschonke]

Great! That was exactly what I needed to progress in my project.