@@ -93,6 +93,8 @@
 if TYPE_CHECKING:
     from types import ModuleType
 
+import warnings
+
 from gitdb.util import to_hex_sha
 
 from git.exc import (
@@ -167,6 +169,7 @@
         IndexEntry,
         IndexFile,
         StageType,
+        util,
     )
     from git.util import (  # @NoMove
         Actor,
@@ -198,12 +201,11 @@
 # the intuitive but potentially incompatible binding occurs due to the usual rules for
 # Python submodule bindings. So for now we delete that and let __getattr__ handle it.
 #
-del util  # type: ignore[name-defined]  # noqa: F821
+del util
 
 
 def _warned_import(message: str, fullname: str) -> "ModuleType":
     import importlib
-    import warnings
 
     warnings.warn(message, DeprecationWarning, stacklevel=3)
     return importlib.import_module(fullname)
 
@@ -13,6 +13,7 @@
 import locale
 import os
 import sys
+import warnings
 
 from gitdb.utils.encoding import force_bytes, force_text  # noqa: F401
 
@@ -48,8 +49,6 @@ def _getattr(name: str) -> Any:
     except KeyError:
         raise AttributeError(f"module {__name__!r} has no attribute {name!r}") from None
 
-    import warnings
-
     warnings.warn(
         f"{__name__}.{name} and other is_<platform> aliases are deprecated. "
         "Write the desired os.name or sys.platform check explicitly instead.",
 
@@ -17,6 +17,7 @@
     TypeVar,
     Union,
 )
+import warnings
 
 if sys.version_info >= (3, 8):
     from typing import (
@@ -150,9 +151,19 @@
 
 
 def _getattr(name: str) -> Any:
-    if name == "Lit_commit_ish":
-        return Literal["commit", "tag"]
-    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+    if name != "Lit_commit_ish":
+        raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+    warnings.warn(
+        "Lit_commit_ish is deprecated. It is currently defined as "
+        '`Literal["commit", "tag"]`, which should be used in its place if desired. It '
+        'had previously been defined as `Literal["commit", "tag", "blob", "tree"]`, '
+        "covering all four git object type strings including those that are never "
+        "commit-ish. For that, use the GitObjectTypeString type instead.",
+        DeprecationWarning,
+        stacklevel=2,
+    )
+    return Literal["commit", "tag"]
 
 
 if not TYPE_CHECKING:  # Preserve static checking for undefined/misspelled attributes.