diff --git a/pw_presubmit/py/pw_presubmit/install_hook.py b/pw_presubmit/py/pw_presubmit/install_hook.py
index 7aad89e..fc86fcf 100755
--- a/pw_presubmit/py/pw_presubmit/install_hook.py
+++ b/pw_presubmit/py/pw_presubmit/install_hook.py
@@ -54,22 +54,6 @@
     return shlex.quote(arg)
 
 
-def install_hook(script,
-                 hook: str,
-                 args: Sequence[str] = (),
-                 repository: Union[Path, str] = '.') -> None:
-    """This function is deprecated; use install_git_hook instead.
-
-    This version of the function takes the script separately from the arguments
-    and calculates the relative path to the script from the root of the repo.
-    This does not work well when the path is to a file installed in the virtual
-    environment, since the execute permission may be lost. Instead of using a
-    path to a script, invoke the script from `python -m` or the `pw` command.
-    """
-    root = git_repo_root(repository).resolve()
-    install_git_hook(hook, [os.path.relpath(script, root), *args], repository)
-
-
 def install_git_hook(hook: str,
                      command: Sequence[Union[Path, str]],
                      repository: Union[Path, str] = '.') -> None:
@@ -129,7 +113,8 @@
                  hook_path)
 
 
-def argument_parser(parser=None) -> argparse.ArgumentParser:
+def argument_parser(
+        parser: argparse.ArgumentParser = None) -> argparse.ArgumentParser:
     if parser is None:
         parser = argparse.ArgumentParser(description=__doc__)
 
@@ -148,18 +133,13 @@
     parser.add_argument('--hook',
                         required=True,
                         help='Which type of Git hook to create')
-    parser.add_argument('-s',
-                        '--script',
-                        required=True,
-                        type=path,
-                        help='Path to the script to execute in the hook')
-    parser.add_argument('args',
+    parser.add_argument('command',
                         nargs='*',
-                        help='Arguments to provide to the commit hook')
+                        help='Command to run in the commit hook')
 
     return parser
 
 
 if __name__ == '__main__':
     logging.basicConfig(format='%(message)s', level=logging.INFO)
-    install_hook(**vars(argument_parser().parse_args()))
+    install_git_hook(**vars(argument_parser().parse_args()))