root/child-c/child-c-1/pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project>
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>net.example</groupId>
    <artifactId>child-c</artifactId>
  </parent>
  <artifactId>child-c-1</artifactId>
  <version>1.3.1</version>
  <packaging>jar</packaging>
  <name>ChildC1</name>
  <dependencies>
    <dependency>
      <groupId>${project.groupId}</groupId>
      <artifactId>child-b-1</artifactId>
    </dependency>
    <dependency>
      <groupId>${project.groupId}</groupId>
      <artifactId>child-1-1</artifactId>
      <!-- explicitly use an older version of child-1-1 -->
      <version>1.0.0</version>
    </dependency>
  </dependencies>
</project>

root/child-c/child-c-1/target/pom-transformed.xml

<?xml version="1.0" encoding="UTF-8"?>
<project>
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>net.example</groupId>
    <artifactId>child-c</artifactId>
    <version>1.3.0</version>
  </parent>
  <artifactId>child-c-1</artifactId>
  <version>1.3.1</version>
  <packaging>jar</packaging>
  <name>ChildC1</name>
  <dependencies>
    <dependency>
      <groupId>${project.groupId}</groupId>
      <artifactId>child-b-1</artifactId>
      <version>1.2.1</version>
    </dependency>
    <dependency>
      <groupId>${project.groupId}</groupId>
      <artifactId>child-1-1</artifactId>
      <!-- explicitly use an older version of child-1-1 -->
      <version>1.0.0</version>
    </dependency>
  </dependencies>
</project>