@@ -652,14 +652,15 @@ def _to_relative_path(self, path: PathLike) -> PathLike:
 
         :raise ValueError:
         """
+        path = os.fspath(path)
         if not osp.isabs(path):
             return path
         if self.repo.bare:
             raise InvalidGitRepositoryError("require non-bare repository")
-        if not osp.normpath(os.fspath(path)).startswith(os.fspath(self.repo.working_tree_dir)):
+        if not osp.normpath(path).startswith(os.fspath(self.repo.working_tree_dir)):
             raise ValueError("Absolute path %r is not in git repository at %r" % (path, self.repo.working_tree_dir))
         result = os.path.relpath(path, self.repo.working_tree_dir)
-        if os.fspath(path).endswith(os.sep) and not result.endswith(os.sep):
+        if path.endswith(os.sep) and not result.endswith(os.sep):
             result += os.sep
         return result
 
 
@@ -37,7 +37,7 @@ class TemporaryFileSwap:
     __slots__ = ("file_path", "tmp_file_path")
 
     def __init__(self, file_path: PathLike) -> None:
-        self.file_path = file_path
+        self.file_path = os.fspath(file_path)
         dirname, basename = osp.split(file_path)
         fd, self.tmp_file_path = tempfile.mkstemp(prefix=basename, dir=dirname)
         os.close(fd)
 
@@ -8,6 +8,7 @@
 
 __all__ = ["HEAD", "Head"]
 
+import os
 from git.config import GitConfigParser, SectionConstraint
 from git.exc import GitCommandError
 from git.util import join_path
@@ -48,6 +49,7 @@ class HEAD(SymbolicReference):
     commit: "Commit"
 
     def __init__(self, repo: "Repo", path: PathLike = _HEAD_NAME) -> None:
+        path = os.fspath(path)
         if path != self._HEAD_NAME:
             raise ValueError("HEAD instance must point to %r, got %r" % (self._HEAD_NAME, path))
         super().__init__(repo, path)
 
@@ -4,6 +4,7 @@
 __all__ = ["RefLog", "RefLogEntry"]
 
 from mmap import mmap
+import os
 import os.path as osp
 import re
 import time as _time
@@ -167,7 +168,7 @@ def __init__(self, filepath: Union[PathLike, None] = None) -> None:
         """Initialize this instance with an optional filepath, from which we will
         initialize our data. The path is also used to write changes back using the
         :meth:`write` method."""
-        self._path = filepath
+        self._path = os.fspath(filepath)
         if filepath is not None:
             self._read_from_file()
         # END handle filepath
 
@@ -76,7 +76,7 @@ class SymbolicReference:
 
     def __init__(self, repo: "Repo", path: PathLike, check_path: bool = False) -> None:
         self.repo = repo
-        self.path = path
+        self.path = os.fspath(path)
 
     def __str__(self) -> str:
         return os.fspath(self.path)
 
@@ -62,6 +62,7 @@ def is_git_dir(d: PathLike) -> bool:
         clearly indicates that we don't support it. There is the unlikely danger to
         throw if we see directories which just look like a worktree dir, but are none.
     """
+    d = os.fspath(d)
     if osp.isdir(d):
         if (osp.isdir(osp.join(d, "objects")) or "GIT_OBJECT_DIRECTORY" in os.environ) and osp.isdir(
             osp.join(d, "refs")
 
@@ -1011,7 +1011,7 @@ class LockFile:
     __slots__ = ("_file_path", "_owns_lock")
 
     def __init__(self, file_path: PathLike) -> None:
-        self._file_path = file_path
+        self._file_path = os.fspath(file_path)
         self._owns_lock = False
 
     def __del__(self) -> None: