Get revision number for module using maven

pom.xml

<plugins>
  <plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>buildnumber-maven-plugin</artifactId>
    <configuration>
      <buildNumberPropertyName>buildRevision</buildNumberPropertyName>
      <timestampPropertyName>buildTimestamp</timestampPropertyName>
      <revisionOnScmFailure>unavailable</revisionOnScmFailure>
      <useLastCommittedRevision>true</useLastCommittedRevision>
      <doUpdate>true</doUpdate>
    </configuration>
    <executions>
      <execution>
        <phase>validate</phase>
        <goals>
          <goal>create</goal>
        </goals>
      </execution>
    </executions>
  </plugin>
</plugins>