diff --git a/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java b/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java
index 882f208..abbba86 100644
--- a/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java
+++ b/java/com/google/gerrit/server/git/receive/AsyncReceiveCommits.java
@@ -39,6 +39,7 @@
 import com.google.gerrit.server.git.MultiProgressMonitor;
 import com.google.gerrit.server.git.ProjectRunnable;
 import com.google.gerrit.server.git.TransferConfig;
+import com.google.gerrit.server.git.receive.ResultChangeIds.Key;
 import com.google.gerrit.server.permissions.PermissionBackend;
 import com.google.gerrit.server.permissions.PermissionBackend.RefFilterOptions;
 import com.google.gerrit.server.permissions.PermissionBackendException;
@@ -341,17 +342,21 @@
 
     long deltaNanos = System.nanoTime() - startNanos;
     int totalChanges = 0;
-    for (ResultChangeIds.Key key : ResultChangeIds.Key.values()) {
-      List<Change.Id> ids = resultChangeIds.get(key);
-      metrics.changes.record(key, ids.size());
-      totalChanges += ids.size();
+
+    if (resultChangeIds.isMagicPush()) {
+      List<Change.Id> created = resultChangeIds.get(Key.CREATED);
+      metrics.changes.record(Key.CREATED, created.size());
+      List<Change.Id> replaced = resultChangeIds.get(Key.REPLACED);
+      metrics.changes.record(Key.REPLACED, replaced.size());
+      totalChanges += replaced.size() + created.size();
+    } else {
+      List<Change.Id> autoclosed = resultChangeIds.get(Key.AUTOCLOSED);
+      metrics.changes.record(Key.AUTOCLOSED, autoclosed.size());
     }
 
     if (totalChanges > 0) {
       metrics.latencyPerChange.record(
-          resultChangeIds.get(ResultChangeIds.Key.AUTOCLOSED).isEmpty()
-              ? "CREATE_REPLACE"
-              : ResultChangeIds.Key.AUTOCLOSED.name(),
+          resultChangeIds.isMagicPush() ? "CREATE_REPLACE" : ResultChangeIds.Key.AUTOCLOSED.name(),
           deltaNanos / totalChanges,
           NANOSECONDS);
     }
diff --git a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
index 32fbd36..3a9a170 100644
--- a/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
+++ b/java/com/google/gerrit/server/git/receive/ReceiveCommits.java
@@ -631,6 +631,7 @@
 
   private void handleRegularCommands(List<ReceiveCommand> cmds, MultiProgressMonitor progress)
       throws PermissionBackendException, IOException, NoSuchProjectException {
+    resultChangeIds.setMagicPush(false);
     for (ReceiveCommand cmd : cmds) {
       parseRegularCommand(cmd);
     }
@@ -1825,6 +1826,7 @@
 
     if (validateConnected(magicBranch.cmd, magicBranch.dest, tip)) {
       this.magicBranch = magicBranch;
+      this.resultChangeIds.setMagicPush(true);
     }
   }
 
diff --git a/java/com/google/gerrit/server/git/receive/ResultChangeIds.java b/java/com/google/gerrit/server/git/receive/ResultChangeIds.java
index bbf8d95..e326141 100644
--- a/java/com/google/gerrit/server/git/receive/ResultChangeIds.java
+++ b/java/com/google/gerrit/server/git/receive/ResultChangeIds.java
@@ -33,6 +33,7 @@
     AUTOCLOSED,
   }
 
+  private boolean isMagicPush;
   private final Map<Key, List<Change.Id>> ids;
 
   ResultChangeIds() {
@@ -43,16 +44,24 @@
   }
 
   /** Record a change ID update as having completed. Thread-safe. */
-  public void add(Key key, Change.Id id) {
-    synchronized (this) {
-      ids.get(key).add(id);
-    }
+  public synchronized void add(Key key, Change.Id id) {
+    ids.get(key).add(id);
   }
 
-  /** Returns change IDs of the given type for which the BatchUpdate succeeded. Thread-safe. */
-  public List<Change.Id> get(Key key) {
-    synchronized (this) {
-      return ImmutableList.copyOf(ids.get(key));
-    }
+  /** Indicate that the ReceiveCommits call involved a magic branch. */
+  public synchronized void setMagicPush(boolean magic) {
+    isMagicPush = magic;
+  }
+
+  public synchronized boolean isMagicPush() {
+    return isMagicPush;
+  }
+
+  /**
+   * Returns change IDs of the given type for which the BatchUpdate succeeded, or empty list if
+   * there are none. Thread-safe.
+   */
+  public synchronized List<Change.Id> get(Key key) {
+    return ImmutableList.copyOf(ids.get(key));
   }
 }