Add contributor's repository address to pull request pages.

As a maintainer, I sometimes need to push changes to contributor’s PRs. The nature of my projects means that I get many one-off submissions from new contributors.

Right now, I have to click on the user’s repo link:

Then open the repo dropdown and copy the link:

Honestly, I don’t know that I’ve ever had a usage for the clipboard icon on the PR (which copies username/branchname).

Instead, it would be nice to short-circuit that and allow copying the contributor’s repository address directly from the PR. Either by repeating the green dropdown or by just copying the SSH address (since I need to be authenticated to push to the branch).

Example URL: https://github.com/shepmaster/snafu/pull/251 (any pull request).

Thanks so much for an awesome project!

[shepmaster]

for checking out using PR numbers

Ah, sorry for not clarifying this better. I actually already have something for that so I can type git pr NNNNN and it downloads and checks out the branch:

[alias]
	pr = "!f() { git fetch -fu upstream refs/pull/$1/head:pr/$1; git checkout pr/$1; } ; f"

The problem comes when I need to push changes to the PR, which requires me to push to the authors branch, AFAIK:

Add more commits by pushing to the patch-1 branch on Henning-K/snafu.

Specifically, I need to run this first command (and ideally some variant of the second):

git remote add Henning-K [e-mail]:Henning-K/snafu.git
git checkout Henning-K/patch-1

The first command requires the repository address.

After some work, I then run some variant of

git push Henning-K +patch-1

[fregante]

Closing in favor of #2767, which tackles the issue directly.