Method fetchOriginTrunk

src/node/worktree/WorktreeManager.ts:266–299

* Fetch trunk branch from origin before worktree creation. * Returns true if fetch succeeded (origin is available for branching).

(
    projectPath: string,
    trunkBranch: string,
    initLogger: InitLogger,
    noHooksEnv: GitExecOptions
  )

   * Returns true if fetch succeeded (origin is available for branching).
   */
  private async fetchOriginTrunk(
    projectPath: string,
    trunkBranch: string,
    initLogger: InitLogger,
    noHooksEnv: GitExecOptions
  ): Promise<boolean> {
    try {
      initLogger.logStep(`Fetching latest from origin/${trunkBranch}...`);

      using fetchProc = execFileAsync(
        "git",
        ["-C", projectPath, "fetch", "origin", trunkBranch],
        noHooksEnv
      );
      await fetchProc.result;

      initLogger.logStep("Fetched latest from origin");
      return true;
    } catch (error) {
      if (isAbortError(error, noHooksEnv?.signal)) {
        throw error;
      }
      const errorMsg = getErrorMessage(error);
      // Branch doesn't exist on origin (common for subagent local-only branches)
      if (errorMsg.includes("couldn't find remote ref")) {
        initLogger.logStep(`Branch "${trunkBranch}" not found on origin; using local state.`);
      } else {
        initLogger.logStderr(
          `Note: Could not fetch from origin (${errorMsg}), using local branch state`
        );
      }
      return false;
    }
  }

  /**
   * Check if local trunk can fast-forward to origin/<trunk>.