diff --git a/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java b/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java
index 2b3108a47fb8..ed3501f32d62 100644
--- a/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java
+++ b/maven-core/src/main/java/org/apache/maven/project/ProjectModelResolver.java
@@ -71,6 +71,8 @@ public class ProjectModelResolver
 
     private final List<RemoteRepository> externalRepositories;
 
+    private final Set<String> externalRepositoryIds;
+
     private final RepositorySystem resolver;
 
     private final RemoteRepositoryManager remoteRepositoryManager;
@@ -98,6 +100,12 @@ public ProjectModelResolver( RepositorySystemSession session, RequestTrace trace
         this.repositories.addAll( externalRepositories );
         this.repositoryMerging = repositoryMerging;
         this.repositoryIds = new HashSet<>();
+        this.externalRepositoryIds = new HashSet<>();
+        for ( final RemoteRepository repository : this.repositories )
+        {
+            this.repositoryIds.add( repository.getId() );
+            this.externalRepositoryIds.add( repository.getId() );
+        }
         this.modelPool = modelPool;
     }
 
@@ -112,6 +120,7 @@ private ProjectModelResolver( ProjectModelResolver original )
         this.repositories = new ArrayList<>( original.repositories );
         this.repositoryMerging = original.repositoryMerging;
         this.repositoryIds = new HashSet<>( original.repositoryIds );
+        this.externalRepositoryIds = new HashSet<>( original.externalRepositoryIds );
         this.modelPool = original.modelPool;
     }
 
@@ -127,7 +136,7 @@ public void addRepository( final Repository repository, boolean replace )
     {
         if ( !repositoryIds.add( repository.getId() ) )
         {
-            if ( !replace )
+            if ( !replace || this.externalRepositoryIds.contains( repository.getId() ) )
             {
                 return;
             }
diff --git a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java
index 681845346912..2411b4e61700 100644
--- a/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java
+++ b/maven-resolver-provider/src/main/java/org/apache/maven/repository/internal/DefaultModelResolver.java
@@ -70,6 +70,8 @@ class DefaultModelResolver
 
     private final List<RemoteRepository> externalRepositories;
 
+    private final Set<String> externalRepositoryIds;
+
     private final ArtifactResolver resolver;
 
     private final VersionRangeResolver versionRangeResolver;
@@ -92,8 +94,13 @@ class DefaultModelResolver
         List<RemoteRepository> externalRepositories = new ArrayList<>();
         externalRepositories.addAll( repositories );
         this.externalRepositories = Collections.unmodifiableList( externalRepositories );
-
         this.repositoryIds = new HashSet<>();
+        this.externalRepositoryIds = new HashSet<>();
+        for ( final RemoteRepository repository : this.repositories )
+        {
+            this.repositoryIds.add( repository.getId() );
+            this.externalRepositoryIds.add( repository.getId() );
+        }
     }
 
     private DefaultModelResolver( DefaultModelResolver original )
@@ -107,6 +114,7 @@ private DefaultModelResolver( DefaultModelResolver original )
         this.repositories = new ArrayList<>( original.repositories );
         this.externalRepositories = original.externalRepositories;
         this.repositoryIds = new HashSet<>( original.repositoryIds );
+        this.externalRepositoryIds = new HashSet<>( original.externalRepositoryIds );
     }
 
     @Override
@@ -127,7 +135,7 @@ public void addRepository( final Repository repository, boolean replace )
 
         if ( !repositoryIds.add( repository.getId() ) )
         {
-            if ( !replace )
+            if ( !replace || this.externalRepositoryIds.contains( repository.getId() ) )
             {
                 return;
             }