diff --git a/test/test_index.py b/test/test_index.py
index fba9c78ec..f4858a586 100644
--- a/test/test_index.py
+++ b/test/test_index.py
@@ -7,10 +7,14 @@
 
 from io import BytesIO
 import os
+import os.path as osp
+from pathlib import Path
 from stat import S_ISLNK, ST_MODE
+import shutil
 import tempfile
 from unittest import skipIf
-import shutil
+
+import pytest
 
 from git import (
     IndexFile,
@@ -23,6 +27,7 @@
     GitCommandError,
     CheckoutError,
 )
+from git.cmd import Git
 from git.compat import is_win
 from git.exc import HookExecutionError, InvalidGitRepositoryError
 from git.index.fun import hook_path
@@ -34,15 +39,22 @@
 from git.util import HIDE_WINDOWS_KNOWN_ERRORS, hex_to_bin
 from gitdb.base import IStream
 
-import os.path as osp
-from git.cmd import Git
+HOOKS_SHEBANG = "#!/usr/bin/env sh\n"
 
-from pathlib import Path
 
-HOOKS_SHEBANG = "#!/usr/bin/env sh\n"
+def _found_in(cmd, directory):
+    """Check if a command is resolved in a directory (without following symlinks)."""
+    path = shutil.which(cmd)
+    return path and Path(path).parent == Path(directory)
+
 
 is_win_without_bash = is_win and not shutil.which("bash.exe")
 
+is_win_with_wsl_bash = is_win and _found_in(
+    cmd="bash.exe",
+    directory=Path(os.getenv("WINDIR")) / "System32",
+)
+
 
 def _make_hook(git_dir, name, content, make_exec=True):
     """A helper to create a hook"""
@@ -910,7 +922,11 @@ def test_pre_commit_hook_fail(self, rw_repo):
         else:
             raise AssertionError("Should have caught a HookExecutionError")
 
-    @skipIf(HIDE_WINDOWS_KNOWN_ERRORS, "TODO: fix hooks execution on Windows: #703")
+    @pytest.mark.xfail(
+        is_win_without_bash or is_win_with_wsl_bash,
+        reason="Specifically seems to fail on WSL bash (in spite of #1399)",
+        raises=AssertionError,
+    )
     @with_rw_repo("HEAD", bare=True)
     def test_commit_msg_hook_success(self, rw_repo):
         commit_message = "commit default head by Frèderic Çaufl€"