import.patch

diff --git proto/def.bzl proto/def.bzl
index 6a2a2d72..61db45ec 100644
--- proto/def.bzl
+++ proto/def.bzl
@@ -123,8 +123,12 @@ def _go_proto_library_impl(ctx):
             imports = get_imports(ctx.attr, go.importpath),
             importpath = go.importpath,
         ))
+    importpath = None
+    if ctx.attr.overrideimportpath:
+        importpath = ctx.attr.overrideimportpath
     library = go.new_library(
         go,
+        importpath = importpath,
         resolver = _proto_library_to_source,
         srcs = go_srcs,
     )
@@ -164,6 +168,7 @@ go_proto_library = rule(
         "importpath": attr.string(),
         "importmap": attr.string(),
         "importpath_aliases": attr.string_list(),  # experimental, undocumented
+        "overrideimportpath": attr.string(),
         "embed": attr.label_list(providers = [GoLibrary]),
         "gc_goopts": attr.string_list(),
         "compiler": attr.label(providers = [GoProtoCompiler]),
--