src/it/updateOnly/pom.xml

<?xml version="1.0" encoding="UTF-8"?>

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.apache.maven.plugins.invoker</groupId>
  <artifactId>updateOnly</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <description>
    Test to check that invocations can use a different POM than the one that was selected via the pomInclude
    parameter. This allows fine-grained control over the build of a multi-module project where the modules are
    (intentionally) not collectively build by the reactor.
  </description>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <version>3.0.0</version>
        <executions>
          <execution>
            <phase>initialize</phase>
            <goals>
              <goal>run</goal>
            </goals>
            <configuration>
              <target>
                <!-- simulate recently modified file in target directory -->
                <touch file="${project.build.directory}/it/project/target/marker.txt" mkdirs="true" />
              </target>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-invoker-plugin</artifactId>
        <version>@project.version@</version>
        <configuration>
          <cloneProjectsTo>${project.build.directory}/it</cloneProjectsTo>
          <pomIncludes>
            <pomInclude>project/pom.xml</pomInclude>
          </pomIncludes>
          <postBuildHookScript>verify</postBuildHookScript>
          <goals>
            <goal>package</goal>
          </goals>
          <!-- turn on the feature-under-test -->
          <updateOnly>true</updateOnly>
        </configuration>
        <executions>
          <execution>
            <id>integration-test</id>
            <phase>initialize</phase>
            <goals>
              <goal>run</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

</project>