Sometimes we may need to fetch Pull-Requests from our remote server so we can test/review them. This can be easily done just adding the following line to your .git/config file.

fetch = +refs/pull-requests/*/from:refs/remotes/REMOTE_NAME/pull-requests/*

Note REMOTE_NAME must be replaced by the remote name you are using (usually upstream or origin)

For instance, having the following configuration:
Server Host: https://server.example.com
Server Port: 7999
User Name: ander.ustarroz
Repository Name: proyecto1.git

This is my default configuration on file: “proyecto1/.git/config”

[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
[remote "upstream"]
        url = ssh://[email protected]:7999/HW/proyecto1.git
        fetch = +refs/heads/*:refs/remotes/upstream/*
[remote "origin"]
        url = ssh://ander.[email protected]:7999/~ander.ustarroz/proyecto1.git
        fetch = +refs/heads/*:refs/remotes/origin/*
 

In order to be able to fetch the Pull-Requests from the upstream and origin we just need to add the following lines:
For upstream:

fetch = +refs/pull-requests/*/from:refs/remotes/upstream/pull-requests/*

For Origin:

fetch = +refs/pull-requests/*/from:refs/remotes/origin/pull-requests/*

This is the resulting config file:

[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
[remote "upstream"]
        url = ssh://[email protected]:7999/HW/proyecto1.git
        fetch = +refs/heads/*:refs/remotes/upstream/*
        fetch = +refs/pull-requests/*/from:refs/remotes/upstream/pull-requests/*
[remote "origin"]
        url = ssh://[email protected]:7999/~ander.ustarroz/proyecto1.git
        fetch = +refs/heads/*:refs/remotes/origin/*
        fetch = +refs/pull-requests/*/from:refs/remotes/origin/pull-requests/*
 

From now on, every time we are fetching upstream or origin, all the Pull-Requests will be included.