diff --git a/lib/modules/datasource/go/base.spec.ts b/lib/modules/datasource/go/base.spec.ts
index b5c85a49870fe5..3f0209831718e9 100644
--- a/lib/modules/datasource/go/base.spec.ts
+++ b/lib/modules/datasource/go/base.spec.ts
@@ -378,6 +378,21 @@ describe('modules/datasource/go/base', () => {
           packageName: 'ssh://git.example.com/uncommon',
         });
       });
+
+      it('returns null for mod imports', async () => {
+        const meta =
+          '<meta name="go-import" content="buf.build/gen/go/gogo/protobuf/protocolbuffers/go mod https://buf.build/gen/go">';
+        httpMock
+          .scope('https://buf.build')
+          .get('/gen/go/gogo/protobuf/protocolbuffers/go?go-get=1')
+          .reply(200, meta);
+
+        const res = await BaseGoDatasource.getDatasource(
+          'buf.build/gen/go/gogo/protobuf/protocolbuffers/go'
+        );
+
+        expect(res).toBeNull();
+      });
     });
   });
 });
diff --git a/lib/modules/datasource/go/base.ts b/lib/modules/datasource/go/base.ts
index fbd4b6a997b381..6f9fe99ee4e44e 100644
--- a/lib/modules/datasource/go/base.ts
+++ b/lib/modules/datasource/go/base.ts
@@ -179,12 +179,17 @@ export class BaseGoDatasource {
       return null;
     }
 
-    const [, prefix, , goImportURL] = importMatch;
+    const [, prefix, proto, goImportURL] = importMatch;
     if (!goModule.startsWith(prefix)) {
       logger.trace({ goModule }, 'go-import header prefix not match');
       return null;
     }
 
+    if (proto !== 'git') {
+      logger.trace({ goModule }, 'go-import header proto not git');
+      return null;
+    }
+
     logger.debug(`Go module: ${goModule} lookup import url ${goImportURL}`);
     // get server base url from import url
     const parsedUrl = URL.parse(goImportURL);