From 8cf4aaf087748dfa92d0407567e5b423515cb256 Mon Sep 17 00:00:00 2001
From: Tamas Cservenak <tamas@cservenak.net>
Date: Thu, 12 Jun 2025 23:26:13 +0200
Subject: [PATCH] Copy in copy method; otherwise reuse

---
 .../main/java/org/eclipse/aether/util/graph/manager/MMap.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/maven-resolver-util/src/main/java/org/eclipse/aether/util/graph/manager/MMap.java b/maven-resolver-util/src/main/java/org/eclipse/aether/util/graph/manager/MMap.java
index 8981a74d8..af7aa34cf 100644
--- a/maven-resolver-util/src/main/java/org/eclipse/aether/util/graph/manager/MMap.java
+++ b/maven-resolver-util/src/main/java/org/eclipse/aether/util/graph/manager/MMap.java
@@ -44,13 +44,13 @@ public static <K, V> MMap<K, V> empty() {
     }
 
     public static <K, V> MMap<K, V> copy(MMap<K, V> orig) {
-        return new MMap<>(orig.delegate);
+        return new MMap<>(new HashMap<>(orig.delegate));
     }
 
     protected final HashMap<K, V> delegate;
 
     private MMap(HashMap<K, V> delegate) {
-        this.delegate = new HashMap<>(delegate);
+        this.delegate = delegate;
     }
 
     public boolean containsKey(K key) {