make --hook-type and stages match

pre_commit/main.py

@@ -7,6 +7,7 @@ import sys
 from typing import Sequence
 
 import pre_commit.constants as C
+from pre_commit import clientlib
 from pre_commit import git
 from pre_commit.color import add_color_option
 from pre_commit.commands.autoupdate import autoupdate
@@ -52,7 +53,7 @@ def _add_config_option(parser: argparse.ArgumentParser) -> None:
 def _add_hook_type_option(parser: argparse.ArgumentParser) -> None:
     parser.add_argument(
         '-t', '--hook-type',
-        choices=C.HOOK_TYPES, action='append', dest='hook_types',
+        choices=clientlib.HOOK_TYPES, action='append', dest='hook_types',
     )
 
 
@@ -73,7 +74,10 @@ def _add_run_options(parser: argparse.ArgumentParser) -> None:
         help='When hooks fail, run `git diff` directly afterward.',
     )
     parser.add_argument(
-        '--hook-stage', choices=C.STAGES, default='commit',
+        '--hook-stage',
+        choices=clientlib.STAGES,
+        type=clientlib.transform_stage,
+        default='pre-commit',
         help='The stage during which the hook is fired.  One of %(choices)s',
     )
     parser.add_argument(