[maven-release-plugin] prepare release maven-3.3.1
diff --git a/apache-maven/pom.xml b/apache-maven/pom.xml
index 90b649b..a75b6a5 100644
--- a/apache-maven/pom.xml
+++ b/apache-maven/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>apache-maven</artifactId>
@@ -37,7 +37,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-aether-provider/pom.xml b/maven-aether-provider/pom.xml
index 77ec510..495fed6 100644
--- a/maven-aether-provider/pom.xml
+++ b/maven-aether-provider/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-aether-provider</artifactId>
@@ -36,7 +36,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-artifact/pom.xml b/maven-artifact/pom.xml
index 4c1e908..0e7d6c4 100644
--- a/maven-artifact/pom.xml
+++ b/maven-artifact/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-artifact</artifactId>
@@ -26,7 +26,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-builder-support/pom.xml b/maven-builder-support/pom.xml
index f88a000..eae1e7c 100644
--- a/maven-builder-support/pom.xml
+++ b/maven-builder-support/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-builder-support</artifactId>
@@ -36,7 +36,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-compat/pom.xml b/maven-compat/pom.xml
index 3b361f6..52f8db6 100644
--- a/maven-compat/pom.xml
+++ b/maven-compat/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-compat</artifactId>
@@ -27,7 +27,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <properties>
diff --git a/maven-core/pom.xml b/maven-core/pom.xml
index 78a91d5..8f5b815 100644
--- a/maven-core/pom.xml
+++ b/maven-core/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-core</artifactId>
@@ -27,7 +27,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <properties>
diff --git a/maven-embedder/pom.xml b/maven-embedder/pom.xml
index 8dbd9d1..408b878 100644
--- a/maven-embedder/pom.xml
+++ b/maven-embedder/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-embedder</artifactId>
@@ -27,7 +27,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-model-builder/pom.xml b/maven-model-builder/pom.xml
index ef8e423..511a51e 100644
--- a/maven-model-builder/pom.xml
+++ b/maven-model-builder/pom.xml
@@ -16,7 +16,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-model-builder</artifactId>
@@ -27,7 +27,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-model/pom.xml b/maven-model/pom.xml
index 1cc60e8..fbe3009 100644
--- a/maven-model/pom.xml
+++ b/maven-model/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-model</artifactId>
@@ -36,7 +36,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <properties>
diff --git a/maven-plugin-api/pom.xml b/maven-plugin-api/pom.xml
index 209b16f..8017a61 100644
--- a/maven-plugin-api/pom.xml
+++ b/maven-plugin-api/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-plugin-api</artifactId>
@@ -36,7 +36,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-repository-metadata/pom.xml b/maven-repository-metadata/pom.xml
index 18d1465..db8d1d7 100644
--- a/maven-repository-metadata/pom.xml
+++ b/maven-repository-metadata/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-repository-metadata</artifactId>
@@ -36,7 +36,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-settings-builder/pom.xml b/maven-settings-builder/pom.xml
index 55f47a0..ddd75fc 100644
--- a/maven-settings-builder/pom.xml
+++ b/maven-settings-builder/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-settings-builder</artifactId>
@@ -36,7 +36,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/maven-settings/pom.xml b/maven-settings/pom.xml
index 7c2314b..62a42c0 100644
--- a/maven-settings/pom.xml
+++ b/maven-settings/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.3.1-SNAPSHOT</version>
+    <version>3.3.1</version>
   </parent>
 
   <artifactId>maven-settings</artifactId>
@@ -36,7 +36,7 @@
   <scm><!-- remove when git scm url format can accept artifact-id at the end, as automatically inherited -->
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
 
   <dependencies>
diff --git a/pom.xml b/pom.xml
index f48e75d..420f634 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   </parent>
 
   <artifactId>maven</artifactId>
-  <version>3.3.1-SNAPSHOT</version>
+  <version>3.3.1</version>
   <packaging>pom</packaging>
 
   <name>Apache Maven</name>
@@ -91,7 +91,7 @@
     <connection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/maven.git</developerConnection>
     <url>https://github.com/apache/maven/tree/${project.scm.tag}</url>
-    <tag>master</tag>
+    <tag>maven-3.3.1</tag>
   </scm>
   <issueManagement>
     <system>jira</system>