<build>
 <plugins>
  <plugin>
   <artifactId>maven-antrun-plugin</artifactId>
   <executions>
    <execution>
     <id>clear-repo</id>
     <phase>pre-clean</phase>
     <goals>
      <goal>run</goal>
     </goals>
     <configuration>
      <tasks>
       <delete dir="${settings.localRepository}"/>
      </tasks>
     </configuration>
    </execution>
   </executions>
  </plugin>
 </plugins>
</build>

mvn_antrun_clear_repo

Using this configuration in pom.xml 'clean' should be only one task in mvn command line (for ex. mvn clean compile now breaks a build on dependency problem, but mvn clean && mvn compile works fine).

Clear local maven repository on clean goal via maven-antrun-plugin

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