How can I fetch an unmerged pull request for a branch I don't own?

Question

I need to pull in a specific pull request (that hasn\'t been processed into the main stream yet) in the NServiceBus repo:

https://github.com/johnsimons/NServiceBus/c

Answer 1

git pull origin pull/28/head

Or

git fetch origin pull/28/head:28
git checkout 28

Can I pull a not-yet-merged pull request?

Answer 2

To fetch a pull into your repository:

git fetch git@github.com:jboss/jboss-common-beans.git refs/pull/4/head

Then do whatever you want with FETCH_HEAD:

git checkout -b new-branch FETCH_HEAD

Answer 3

below is to make your 'git fetch' command to fetch all pull requests when run "git fetch"

add below into ~/.gitconfig

[remote "origin"]
fetch = +refs/pull-requests/*/from:refs/remotes/origin/pr/*

note the reference "refs/pull-requests/" has the stash naming convention, for git hub, you may need different format

Answer 4

You can do this:

1) Add the upstream remote:

git remote add upstream git@github.com:Particular/NServiceBus.git

2) After that, you can checkout any pull request to a new branch per its ID:

git fetch upstream pull/PULL_REQUEST_ID/head:NEW_BRANCH_NAME

Then you'll have a branch named NEW_BRANCH_NAME containing the PR code.

Adding an alias:

If you do this as often as me, you may want to setup some aliases for it. I have this in my .gitconfig:

[alias]
    fetch-pr = "!f(){\
        [ -z \"$1\" ] && { echo Usage: git fetch-pr PULL_REQUEST_ID [REMOTE_NAME] [NEW_BRANCH_NAME]; exit 1; }; \
        remote=${2:-origin}; \
        branch=${3:-pr-$1}; \
        git fetch $remote \"pull/$1/head:$branch\"; \
        }; f "
    pr = "!f(){\
        branch=${3:-pr-$1}; \
        git fetch-pr \"$@\"; \
        git switch $branch; \
        }; f "

With the above, I can do:

git fetch-pr 123              # fetch PR #123 into branch pr-123
git fetch-pr 123 some-branch  # fetch PR #123 into some-branch
git pr 123                    # fetch and switch to the branch

Answer 5

This is the solution from GitHub docs:

From your project repository, check out a new branch and test the changes.

git checkout -b GithubUserID-branchName branchName
git pull https://github.com/GithubUserID/reponame.git branchName

Where:

1. GithubUserID is the username of the person who opened the pull request.
2. branchName is the name of the branch for example master
3. reponame the repository name like demo-todo

Example :

git checkout -b felix123-master master
git pull https://github.com/felix123/demo-todo.git master

Answer 6

See this help article from GitHub: https://help.github.com/articles/checking-out-pull-requests-locally