Improvements to try resolve the issues with login checksums.

ptlinux/depot.py

@@ -38,6 +38,9 @@ DOWNLOAD_RETRY_DELAYS_SECONDS = (1.0, 2.0, 4.0, 8.0, 16.0)
 PROGRESS_UPDATE_INTERVAL_SECONDS = 0.075
 MAX_CREATE_IF_MISSING_BYTES = 16 * 1024 * 1024
 MAX_LINE_ENDING_RECOVERY_BYTES = 1024 * 1024
+ALWAYS_VERIFY_PATHS = frozenset(
+	{"game.exe", "game.dll", "gamese.exe", "gamese.dll"}
+)
 SHA1_PATTERN = re.compile(r"^[0-9a-fA-F]{40}$")
 CONTENT_RANGE_PATTERN = re.compile(r"^bytes\s+(\d+)-(\d+)/(\d+)$", re.IGNORECASE)
 
@@ -453,7 +456,11 @@ def plan_update(
 				continue
 		except OSError as exc:
 			raise DepotError(f"cannot inspect {file.path}: {exc}") from exc
-		if repair or file.build == snapshot.build:
+		if (
+			repair
+			or file.build == snapshot.build
+			or file.path.casefold() in ALWAYS_VERIFY_PATHS
+		):
 			if _sha1(target).casefold() != file.sha1.casefold():
 				downloads.append(PlannedDownload(file, "hash mismatch"))