diff --git a/.github/workflows/cygwin-test.yml b/.github/workflows/cygwin-test.yml
@@ -0,0 +1,57 @@
diff --git a/git/repo/base.py b/git/repo/base.py
@@ -29,7 +29,7 @@
from git.util import (
    Actor,
    finalize_process,
-    decygpath,
    hex_to_bin,
    expand_path,
    remove_password_if_present,
@@ -175,7 +175,10 @@ def __init__(
        if not epath:
            epath = os.getcwd()
        if Git.is_cygwin():
-            epath = decygpath(epath)

        epath = epath or path or os.getcwd()
        if not isinstance(epath, str):

diff --git a/git/repo/fun.py b/git/repo/fun.py
@@ -7,7 +7,7 @@
from git.exc import WorkTreeRepositoryUnsupported
from git.objects import Object
from git.refs import SymbolicReference
-from git.util import hex_to_bin, bin_to_hex, decygpath
from gitdb.exc import (
    BadObject,
    BadName,
@@ -109,7 +109,9 @@ def find_submodule_git_dir(d: "PathLike") -> Optional["PathLike"]:

            if Git.is_cygwin():
                ## Cygwin creates submodules prefixed with `/cygdrive/...` suffixes.
-                path = decygpath(path)
            if not osp.isabs(path):
                path = osp.normpath(osp.join(osp.dirname(d), path))
            return find_submodule_git_dir(path)

diff --git a/git/util.py b/git/util.py
@@ -310,7 +310,7 @@ def _cygexpath(drive: Optional[str], path: str) -> str:
            else:
                p = cygpath(p)
        elif drive:
-            p = "/cygdrive/%s/%s" % (drive.lower(), p)
    p_str = str(p)  # ensure it is a str and not AnyPath
    return p_str.replace("\\", "/")

@@ -334,7 +334,7 @@ def cygpath(path: str) -> str:
    """Use :meth:`git.cmd.Git.polish_url()` instead, that works on any environment."""
    path = str(path)  # ensure is str and not AnyPath.
    # Fix to use Paths when 3.5 dropped. or to be just str if only for urls?
-    if not path.startswith(("/cygdrive", "//")):
        for regex, parser, recurse in _cygpath_parsers:
            match = regex.match(path)
            if match:
@@ -348,7 +348,7 @@ def cygpath(path: str) -> str:
    return path


-_decygpath_regex = re.compile(r"/cygdrive/(\w)(/.*)?")


def decygpath(path: PathLike) -> str:
@@ -377,7 +377,9 @@ def is_cygwin_git(git_executable: PathLike) -> bool:


def is_cygwin_git(git_executable: Union[None, PathLike]) -> bool:
-    if not is_win:
        return False

    if git_executable is None:

diff --git a/test/test_docs.py b/test/test_docs.py
@@ -5,6 +5,9 @@
# This module is part of GitPython and is released under
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
import os

from test.lib import TestBase
from test.lib.helper import with_rw_directory
@@ -475,6 +478,11 @@ def test_references_and_objects(self, rw_dir):

        repo.git.clear_cache()

    def test_submodules(self):
        # [1-test_submodules]
        repo = self.rorepo

diff --git a/test/test_repo.py b/test/test_repo.py
@@ -11,9 +11,12 @@
import os
import pathlib
import pickle
import tempfile
from unittest import mock, skipIf, SkipTest

from git import (
    InvalidGitRepositoryError,
    Repo,
@@ -903,6 +906,11 @@ def test_repo_odbtype(self):
        target_type = GitCmdObjectDB
        self.assertIsInstance(self.rorepo.odb, target_type)

    def test_submodules(self):
        self.assertEqual(len(self.rorepo.submodules), 1)  # non-recursive
        self.assertGreaterEqual(len(list(self.rorepo.iter_submodules())), 2)

diff --git a/test/test_submodule.py b/test/test_submodule.py
@@ -3,8 +3,11 @@
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
import os
import shutil
from unittest import skipIf

import git
from git.cmd import Git
from git.compat import is_win
@@ -437,6 +440,11 @@ def test_base_rw(self, rwrepo):
    def test_base_bare(self, rwrepo):
        self._do_base_tests(rwrepo)

    @skipIf(
        HIDE_WINDOWS_KNOWN_ERRORS,
        """