diff --git a/java/com/google/gerrit/acceptance/PushOneCommit.java b/java/com/google/gerrit/acceptance/PushOneCommit.java
index 3ccbe4d85b..afd451ae31 100644
--- a/java/com/google/gerrit/acceptance/PushOneCommit.java
+++ b/java/com/google/gerrit/acceptance/PushOneCommit.java
@@ -25,6 +25,8 @@ import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Sets;
 import com.google.gerrit.common.Nullable;
+import com.google.gerrit.common.UsedAt;
+import com.google.gerrit.common.UsedAt.Project;
 import com.google.gerrit.entities.Account;
 import com.google.gerrit.entities.Change;
 import com.google.gerrit.entities.PatchSet;
@@ -91,6 +93,14 @@ public class PushOneCommit {
         @Assisted String subject,
         @Assisted Map<String, String> files);
 
+    @UsedAt(Project.PLUGIN_CODE_OWNERS)
+    PushOneCommit create(
+        PersonIdent i,
+        TestRepository<?> testRepo,
+        @Assisted("subject") String subject,
+        @Assisted Map<String, String> files,
+        @Assisted("changeId") String changeId);
+
     PushOneCommit create(
         PersonIdent i,
         TestRepository<?> testRepo,
@@ -227,15 +237,16 @@ public class PushOneCommit {
         changeId);
   }
 
-  private PushOneCommit(
+  @AssistedInject
+  PushOneCommit(
       ChangeNotes.Factory notesFactory,
       ApprovalsUtil approvalsUtil,
       Provider<InternalChangeQuery> queryProvider,
-      PersonIdent i,
-      TestRepository<?> testRepo,
-      String subject,
-      Map<String, String> files,
-      String changeId)
+      @Assisted PersonIdent i,
+      @Assisted TestRepository<?> testRepo,
+      @Assisted("subject") String subject,
+      @Assisted Map<String, String> files,
+      @Nullable @Assisted("changeId") String changeId)
       throws Exception {
     this.testRepo = testRepo;
     this.notesFactory = notesFactory;
diff --git a/java/com/google/gerrit/common/UsedAt.java b/java/com/google/gerrit/common/UsedAt.java
index 9f8b2551bd..e38ad9ad7f 100644
--- a/java/com/google/gerrit/common/UsedAt.java
+++ b/java/com/google/gerrit/common/UsedAt.java
@@ -34,6 +34,7 @@ public @interface UsedAt {
     GOOGLE,
     COLLABNET,
     PLUGIN_CHECKS,
+    PLUGIN_CODE_OWNERS,
     PLUGIN_DELETE_PROJECT,
     PLUGIN_SERVICEUSER,
     PLUGINS_ALL, // Use this project if a method/type is generally made available to all plugins.