fix(land): keep git maintenance from racing the fixer import

src/cli/land-fixer-repository.ts

@@ -41,6 +41,9 @@ export function importFixer(
 	const objects: string[] = [];
 	const walk = (path: string, relative = "") => {
 		for (const name of readdirSync(path)) {
+			// Git lock files are transient: a background `git maintenance` or auto-gc can create and remove one
+			// while this walks (moq-dev/moq#6987 crashed on a vanished `objects/maintenance.lock`). None is imported.
+			if (name.endsWith(".lock")) continue;
 			if (++files > 100_000) throw new Error("fixer repository has too many files");
 			const child = join(path, name);
 			const rel = relative ? `${relative}/${name}` : name;

src/cli/land-fixer.ts

@@ -180,6 +180,9 @@ export async function startFixer(
 		return;
 	}
 	git(checkout, ["init", "--quiet"]);
+	// No background gc or maintenance may rewrite objects while the daemon imports the fixer's result.
+	git(checkout, ["config", "gc.auto", "0"]);
+	git(checkout, ["config", "maintenance.auto", "false"]);
 	git(checkout, [
 		"fetch",
 		"--quiet",

test/land.test.ts

@@ -2074,6 +2074,8 @@ describe.skipIf(process.platform === "win32")("asynchronous land fixer", () => {
 		mkdirSync(submodule, { recursive: true });
 		writeFileSync(join(submodule, `${large}.pack`), "");
 		truncateSync(join(submodule, `${large}.pack`), 101 * 1024 * 1024);
+		// A transient lock is skipped, never read: git maintenance may remove it mid-walk (moq-dev/moq#6987).
+		symlinkSync(join(checkout, "missing"), join(checkout, ".git", "objects", "maintenance.lock"));
 		importFixer(root, tempDir(), checkout, 1, fixed, [...packs, `${large}.pack`]);
 		expect(git(root, "show", `${fixed}:kept.txt`)).toBe("unchanged");
 		expect(git(root, "rev-parse", `${fixed}^`)).toBe(pinned);