Github Actions `isFork` False Positive

[tynes]

I am observing an error running codechecks in Github Actions - Provider should never be in fork mode and not in PR mode!
It appears as if there is a false positive as the PR is not coming from a fork. The code is here:

monorepo/packages/client/src/getExecutionContext.ts

Lines 20 to 25 in 13986fe

	const isFork = await ciProvider.isFork();
	const pr = await ciProvider.getPullRequestID();
	const projectSlug = await ciProvider.getProjectSlug();
	if (!pr && isFork) {
	throw new Error("Provider should never be in fork mode and not in PR mode!");
	}

For Github actions, !pr is always true

monorepo/packages/client/src/ci-providers/GithubActions.ts

Lines 14 to 16 in ba52ad8

	getPullRequestID(): number | undefined {
	return undefined;
	}

And isFork is always true because GITHUB_HEAD_REF is set for PRs submitted from the same repo. See the docs here: https://docs.github.com/en/actions/reference/environment-variables

monorepo/packages/client/src/ci-providers/GithubActions.ts

Lines 27 to 31 in ba52ad8

	isFork(): boolean {
	// This is only set for forked repositories
	// @see https://help.github.com/en/articles/virtual-environments-for-github-actions#default-environment-variables
	return !!this.env["GITHUB_HEAD_REF"];
	}

GITHUB_HEAD_REF	Only set for pull request events. The name of the head branch.

Perhaps there is a better way to determine there the PR is coming from a fork, will update if I determine a good solution

[krzkaczor]

It should be fixed in: #81

beta released as: @codechecks/client@0.1.10-beta