diff --git a/bindgen/transitive_repositories.bzl b/bindgen/transitive_repositories.bzl
index 66c80ee5fc..f39c3ac89e 100644
--- a/bindgen/transitive_repositories.bzl
+++ b/bindgen/transitive_repositories.bzl
@@ -2,18 +2,35 @@
 
 load("@llvm-raw//utils/bazel:configure.bzl", "llvm_configure", "llvm_disable_optional_support_deps")
 
+DEFAULT_REPO_MAPPING = {
+    "@llvm_zlib": "@zlib",
+}
+LLVM_TARGETS = ["AArch64", "X86"]
+
 # buildifier: disable=unnamed-macro
-def rust_bindgen_transitive_dependencies():
-    """Declare transitive dependencies needed for bindgen."""
+def rust_bindgen_transitive_dependencies(repo_mapping = DEFAULT_REPO_MAPPING):
+    """Declare transitive dependencies needed for bindgen.
+
+    Args:
+      repo_mapping: Mapping for renaming repositories created by this function.
+        The repository names created by this function are undocumented and subject
+        to change in the future.
+    """
 
-    llvm_configure(
-        name = "llvm-project",
-        repo_mapping = {"@llvm_zlib": "@zlib"},
-        targets = [
-            "AArch64",
-            "X86",
-        ],
-    )
+    # Bzlmod does not support the `repo_mapping` parameter *at all*, so we have
+    # to only specify it when requested.
+    if repo_mapping == None:
+        llvm_configure(
+            name = "llvm-project",
+            targets = LLVM_TARGETS,
+        )
+    else:
+        llvm_repo_name = repo_mapping.get("llvm-project", "llvm-project")
+        llvm_configure(
+            name = llvm_repo_name,
+            repo_mapping = repo_mapping,
+            targets = LLVM_TARGETS,
+        )
 
     # Disables optional dependencies for Support like zlib and terminfo. You may
     # instead want to configure them using the macros in the corresponding bzl