/**
 * Remint a short-lived GitHub App installation token and apply it for git/gh.
 * Never prints the token. Safe for ChimpHands agents and GHA runners.
 */
export type RefreshGitAuthResult = {
    ok: true;
    repositoryFullName: string;
    expiresAtMillis: number;
};
/**
 * Mint a ~1h GitHub App installation token and apply it for subsequent git/gh
 * in this process (and this GHA job when GITHUB_ENV is set).
 *
 * Does **not** print the token. Applies via:
 * - process.env GH_TOKEN / GITHUB_TOKEN
 * - $GITHUB_ENV when present (GitHub Actions)
 * - origin remote URL rewrite (https github.com) when possible
 * - `gh auth login --with-token` + `gh auth setup-git` when `gh` exists
 */
export declare function refreshGitAuth(): Promise<RefreshGitAuthResult>;
/** True when stderr/stdout looks like expired / rejected GitHub credentials. */
export declare function looksLikeGitAuthFailure(text: string): boolean;