how to request pull request from a particular remote in git?

Question

This is how my config file of git looks:

[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
        ignorecase = true
        precomposeunicode = false
[remote "origin"]
        url = git@github.com:XXXXXXX/training.test.git
        fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]
        remote = origin
        merge = refs/heads/master
[remote "upstream"]
        url = https://github.com/YYYYYYY/training.test.git
        fetch = +refs/heads/*:refs/remotes/upstream/*

The remote "origin" points to my github account The remote "upstream" points to a different github account from where I forked into mine.

Q1: so everytime I do a git pull, it will pull from my remote (which is "origin"). how will I do a git pull of the remote upstream .

Q2: any changes I commit and push to my repository, the other user "YYYYY" must be notified for a pull request. how would I achieve this?

Answer 1

1. git pull remoterepo remotebranch[:localbranch] (e.g.git pull upstream foo:bar , git pull pustream foo)

   or git checkout --track upstream/remotebranch if your local repo has no such a branch named remotebranch

   you can use git branch -r to show the remote branchs.

2. you can use github webhook