diff --git a/pre_commit/clientlib.py b/pre_commit/clientlib.py
index df8d2e2d..8be17625 100644
--- a/pre_commit/clientlib.py
+++ b/pre_commit/clientlib.py
@@ -114,8 +114,7 @@ LOCAL = 'local'
 META = 'meta'
 
 
-# should inherit from cfgv.Conditional if sha support is dropped
-class WarnMutableRev(cfgv.ConditionalOptional):
+class WarnMutableRev(cfgv.Conditional):
     def check(self, dct: dict[str, Any]) -> None:
         super().check(dct)
 
@@ -171,36 +170,6 @@ class OptionalSensibleRegexAtTop(cfgv.OptionalNoDefault):
                 )
 
 
-class MigrateShaToRev:
-    key = 'rev'
-
-    @staticmethod
-    def _cond(key: str) -> cfgv.Conditional:
-        return cfgv.Conditional(
-            key, cfgv.check_string,
-            condition_key='repo',
-            condition_value=cfgv.NotIn(LOCAL, META),
-            ensure_absent=True,
-        )
-
-    def check(self, dct: dict[str, Any]) -> None:
-        if dct.get('repo') in {LOCAL, META}:
-            self._cond('rev').check(dct)
-            self._cond('sha').check(dct)
-        elif 'sha' in dct and 'rev' in dct:
-            raise cfgv.ValidationError('Cannot specify both sha and rev')
-        elif 'sha' in dct:
-            self._cond('sha').check(dct)
-        else:
-            self._cond('rev').check(dct)
-
-    def apply_default(self, dct: dict[str, Any]) -> None:
-        if 'sha' in dct:
-            dct['rev'] = dct.pop('sha')
-
-    remove_default = cfgv.Required.remove_default
-
-
 def _entry(modname: str) -> str:
     """the hook `entry` is passed through `shlex.split()` by the command
     runner, so to prevent issues with spaces and backslashes (on Windows)
@@ -324,14 +293,11 @@ CONFIG_REPO_DICT = cfgv.Map(
         'repo', META,
     ),
 
-    MigrateShaToRev(),
     WarnMutableRev(
-        'rev',
-        cfgv.check_string,
-        '',
-        'repo',
-        cfgv.NotIn(LOCAL, META),
-        True,
+        'rev', cfgv.check_string,
+        condition_key='repo',
+        condition_value=cfgv.NotIn(LOCAL, META),
+        ensure_absent=True,
     ),
     cfgv.WarnAdditionalKeys(('repo', 'rev', 'hooks'), warn_unknown_keys_repo),
 )
diff --git a/tests/clientlib_test.py b/tests/clientlib_test.py
index 23d9352f..41d8fc7e 100644
--- a/tests/clientlib_test.py
+++ b/tests/clientlib_test.py
@@ -14,7 +14,6 @@ from pre_commit.clientlib import CONFIG_SCHEMA
 from pre_commit.clientlib import DEFAULT_LANGUAGE_VERSION
 from pre_commit.clientlib import MANIFEST_SCHEMA
 from pre_commit.clientlib import META_HOOK_DICT
-from pre_commit.clientlib import MigrateShaToRev
 from pre_commit.clientlib import OptionalSensibleRegexAtHook
 from pre_commit.clientlib import OptionalSensibleRegexAtTop
 from pre_commit.clientlib import validate_config_main
@@ -417,48 +416,6 @@ def test_valid_manifests(manifest_obj, expected):
     assert ret is expected
 
 
-@pytest.mark.parametrize(
-    'dct',
-    (
-        {'repo': 'local'}, {'repo': 'meta'},
-        {'repo': 'wat', 'sha': 'wat'}, {'repo': 'wat', 'rev': 'wat'},
-    ),
-)
-def test_migrate_sha_to_rev_ok(dct):
-    MigrateShaToRev().check(dct)
-
-
-def test_migrate_sha_to_rev_dont_specify_both():
-    with pytest.raises(cfgv.ValidationError) as excinfo:
-        MigrateShaToRev().check({'repo': 'a', 'sha': 'b', 'rev': 'c'})
-    msg, = excinfo.value.args
-    assert msg == 'Cannot specify both sha and rev'
-
-
-@pytest.mark.parametrize(
-    'dct',
-    (
-        {'repo': 'a'},
-        {'repo': 'meta', 'sha': 'a'}, {'repo': 'meta', 'rev': 'a'},
-    ),
-)
-def test_migrate_sha_to_rev_conditional_check_failures(dct):
-    with pytest.raises(cfgv.ValidationError):
-        MigrateShaToRev().check(dct)
-
-
-def test_migrate_to_sha_apply_default():
-    dct = {'repo': 'a', 'sha': 'b'}
-    MigrateShaToRev().apply_default(dct)
-    assert dct == {'repo': 'a', 'rev': 'b'}
-
-
-def test_migrate_to_sha_ok():
-    dct = {'repo': 'a', 'rev': 'b'}
-    MigrateShaToRev().apply_default(dct)
-    assert dct == {'repo': 'a', 'rev': 'b'}
-
-
 @pytest.mark.parametrize(
     'config_repo',
     (