Pull request creation to forked repository via web api fails

[lixfel]

Description

Gitea prevents pull request creation with the web api from the original repository to the fork with the error message: <Response [404]> b'{"errors":null,"message":"GetForkedRepo","url":"https://try.gitea.io/api/swagger"}\n'.

I managed to reproduce the issue on https://try.gitea.io/Lixfel/FreeSql .

Reproduction code:

token = "?"
import requests
response = requests.post(
        f'https://try.gitea.io/api/v1/repos/Lixfel/FreeSql/pulls?token={token}',
        json={
            "base": "master",
            "head": "huihuiyule:master",
            "title": "Update Upstream"
        })
print(f"{response} {response.content}")

Bug origin assumption:
https://github.com/go-gitea/gitea/blob/main/routers/api/v1/repo/pull.go#L967 seems to only allow PRs from the fork to the original repository, a method call GetForkingRepo is missing.

Gitea Version

1.16.9

Can you reproduce the bug on the Gitea demo site?

Yes

Log Gist

https://gist.github.com/lixfel/e0c36e3b85a1b8ffbf994baf275e49bd

Screenshots

No response

Git Version

1:2.30.2-1 (apt version)

Operating System

Debian

How are you running Gitea?

Use of Gitea Downloads site; execution with systemd

Database

MySQL

[haru3me]

Since #26785, it become able to create PR to forked repository from origin via web.
But, I think the API still have the issue.

I've tested with try.gitea.io using this repository.
the result is below:

$ curl -X 'POST' \
>   'https://try.gitea.io/api/v1/repos/haru3me/test2/pulls?token=<secret>' \
>   -H 'accept: application/json' \
>   -H 'Content-Type: application/json' \
>   -d '{
>   "base": "main",
>   "body": "This is a PR",
>   "head": "lng2023:main",
>   "title": "PR title"
> }'
{"errors":null,"message":"GetForkedRepo","url":"https://try.gitea.io/api/swagger"}

On the my instance running 1.20.4 also have same issue.
additionally, I tested with tea command and also got fail.

.\tea.exe pr create --repo "haru/test_action_dummy" --head "dummy:main" --base "main"
Error: could not create PR from dummy:main to haru:main: GetForkedRepo

By the way, I know #20479 is closed recently. Is there any plan with this ..?
I think it would be really helpful with Gitea Actions.

[LordChunk]

I'm also running into the exaqct issue on v1.22.1