diff --git a/modules/googleapis/0.0.0-20241220-5e258e33/MODULE.bazel b/modules/googleapis/0.0.0-20241220-5e258e33/MODULE.bazel
index 29ab535276d..8840d2e901f 100644
--- a/modules/googleapis/0.0.0-20241220-5e258e33/MODULE.bazel
+++ b/modules/googleapis/0.0.0-20241220-5e258e33/MODULE.bazel
@@ -5,8 +5,15 @@ module(
     bazel_compatibility = [">=7.2.1"],
 )
 
+# Only needed for well-known protos.
 bazel_dep(name = "protobuf", version = "21.7", repo_name = "com_google_protobuf")
+
+# Only needed for proto_library.
 bazel_dep(name = "rules_proto", version = "5.3.0-21.7")
 
 switched_rules = use_extension("//private/extensions:switched_rules.bzl", "switched_rules")
-use_repo(switched_rules, "com_google_googleapis_imports", "io_bazel_rules_go")
+use_repo(
+    switched_rules,
+    "com_google_googleapis_imports",
+    "io_bazel_rules_go",
+)
diff --git a/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/constants.bzl b/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/constants.bzl
index ab36f3009bc..13414d6aa1a 100644
--- a/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/constants.bzl
+++ b/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/constants.bzl
@@ -1,5 +1,5 @@
 # Maps rules used by googleapis to <flavor> if the rule is registered by the googleapis-<flavor>
-# module or to None if the rule is not supported yet.
+# module or to None if the rule is not supported yet (some may never be).
 RULE_TO_FLAVOR = {
     "cc_gapic_library": None,
     "cc_grpc_library": None,
diff --git a/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/switched_rules.bzl b/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/switched_rules.bzl
index 2b287649506..391b6d32b62 100644
--- a/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/switched_rules.bzl
+++ b/modules/googleapis/0.0.0-20241220-5e258e33/overlay/private/extensions/switched_rules.bzl
@@ -44,6 +44,8 @@ _imports = repository_rule(
     },
 )
 
+# This hack is needed due to direct references to @io_bazel_rules_go//proto:go_grpc in build files.
+# Create an alias repo that resembles rules_go and forwards the go_grpc target to the actual target.
 def _io_bazel_rules_go_grpc_forwarder_impl(repo_ctx):
     content = ""
     if repo_ctx.attr.go_grpc_label:
diff --git a/modules/googleapis/0.0.0-20241220-5e258e33/source.json b/modules/googleapis/0.0.0-20241220-5e258e33/source.json
index 74f47a21397..6eed6b5ca0d 100644
--- a/modules/googleapis/0.0.0-20241220-5e258e33/source.json
+++ b/modules/googleapis/0.0.0-20241220-5e258e33/source.json
@@ -3,12 +3,12 @@
     "strip_prefix": "googleapis-5e258e334154da04dcd0a567a61ac21518cac81b",
     "url": "https://github.com/googleapis/googleapis/archive/5e258e334154da04dcd0a567a61ac21518cac81b.tar.gz",
     "overlay": {
-        "MODULE.bazel": "sha256-p6zH/gAEnFto82U3NsmKX96nkCRe3slSZIr+NF1XZns=",
+        "MODULE.bazel": "sha256-/97gfXIGhSSjv7u/d+olSG9KWHwPsG7H8kj7NWXXqvE=",
         "extensions.bzl": "sha256-jj4EKrYrYsALa4wi11LYl7yULEWhIDr3HyKNnL6LFUE=",
         "private/extensions/BUILD.bazel": "sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=",
-        "private/extensions/constants.bzl": "sha256-CtBb2ekQdEatYN0pd6l0Aakn8zRN6Ty2CAgzohNx4KI=",
+        "private/extensions/constants.bzl": "sha256-N3+45VEQ9zVopqZw5BwDstYukv9pILF29K4Mu9zdpH8=",
         "private/extensions/fail_macro.bzl": "sha256-Ux6k9i7qKn7Y0gT1LFnHZiTGuPid7m1p3PncsnK8/iU=",
-        "private/extensions/switched_rules.bzl": "sha256-LkAQ/CEVSLYhHb0k1Ym4uBRC0yf6NQugxPZjPZteXMg=",
+        "private/extensions/switched_rules.bzl": "sha256-v8KqUuRupCid/jMiny6J/qYgbP2uRORrnC9rIWOwCTE=",
         "tests/bcr/.bazelrc": "sha256-hFZT+gits3VtXcUkKuh3NCEC9FgBNGuNxaOVCuOiFPk=",
         "tests/bcr/BUILD.bazel": "sha256-V70eP/KkZPjN+Zu//fkuZmvg0IhUvzSMR2Iis3whacc=",
         "tests/bcr/MODULE.bazel": "sha256-4s8xj9npqDzhJXi6BfQYDLhDoXwZ9cdFD4khXRvqWzs=",