"Checkout with GitHub Desktop" does nothing

I use GitHub Desktop both at work and at home. So I create a branch and then a pull request at work Then at home I go using the browser to the URL like this: https://github.com/XXXX/xxx/pull/28511 and click the “Checkout with GitHub Desktop” and nothing happens in GitHub Desktop. absolutely nothing only the log reveals something:

2021-08-27T16:02:28.906Z - info: [main] Received possible protocol arguments: 4
2021-08-27T16:02:28.906Z - info: [main] Processing protocol url
2021-08-27T16:02:29.123Z - warn: [ui] failed fetching PR for gemal/xxx/pulls/28511
Error: Not Found
    at ct (C:\Users\Henrik Gemal\AppData\Local\GitHubDesktop\app-2.9.3-beta1\webpack:\app\src\lib\http.ts:178:11)
    at Pt.fetchPullRequest (C:\Users\Henrik Gemal\AppData\Local\GitHubDesktop\app-2.9.3-beta1\webpack:\app\src\lib\api.ts:893:7)
    at Object.fetchPullRequest (C:\Users\Henrik Gemal\AppData\Local\GitHubDesktop\app-2.9.3-beta1\webpack:\app\src\lib\stores\app-store.ts:1653:9)
    at Object.openPullRequestFromUrl (C:\Users\Henrik Gemal\AppData\Local\GitHubDesktop\app-2.9.3-beta1\webpack:\app\src\ui\dispatcher\dispatcher.ts:1672:11)
    at Object.openRepositoryFromUrl (C:\Users\Henrik Gemal\AppData\Local\GitHubDesktop\app-2.9.3-beta1\webpack:\app\src\ui\dispatcher\dispatcher.ts:1624:9)
2021-08-27T16:02:29.550Z - info: [main] Error report submitted

Using: Version 2.9.3-beta1 (x64)

[steveward]

@gemal I did some testing and was able to reproduce this issue. Can you confirm if you are working in a repository that is a fork?

It looks like this specifically happens when checking out a PR that was created from a fork. We previously had a bug around this (but not specific to forks) that was addressed in https://github.com/desktop/desktop/issues/12215.

Testing steps:

• I tested the checkout in Desktop flow on https://github.com/desktop/desktop/pull/12944 (not a fork), and the app correctly checked out the PR branch.
• Next I tested https://github.com/desktop/desktop/pull/12777 (which is from a fork), and the app did not properly switch branches and threw an error:

2021-09-15T20:59:49.438Z - warn: [ui] failed fetching PR for mahezsh/desktop/pulls/12777
Error: Not Found
    at ct (/webpack:/app/src/lib/http.ts:178:11)
    at At.fetchPullRequest (/webpack:/app/src/lib/api.ts:893:7)
    at Object.fetchPullRequest (/webpack:/app/src/lib/stores/app-store.ts:1656:9)
    at Object.openPullRequestFromUrl (/webpack:/app/src/ui/dispatcher/dispatcher.ts:1671:11)
    at Object.openRepositoryFromUrl (/webpack:/app/src/ui/dispatcher/dispatcher.ts:1623:9)

It looks like the app is fetching from the wrong user – it should be desktop/desktop/pulls/12777 instead of mahezsh in this instance.

/cc @desktop/engineering for confirmation

[sergiou87]

Maybe it was a regression introduced on the web and has been fixed already 😅

Closing for now, let us know if you find a case that doesn’t work! Thanks!! 😄