When I try to build branch 7.3.x by 'mvn clean package -DskipTests' I get the following error

[ERROR] Failed to resolve target definition /home/apodhrad/.m2/repository/org/jboss/tools/integration-stack/target-platform/4.2.9-SNAPSHOT/target-platform-4.2.9-SNAPSHOT-base-ea.target: Failed to load p2 metadata repository from location https://repository.jboss.org/nexus/content/unzip/unzip/org/jboss/tools/locus/update.site/1.4.0-SNAPSHOT/update.site-1.4.0-SNAPSHOT.zip-unzip/: No repository found at https://repository.jboss.org/nexus/content/unzip/unzip/org/jboss/tools/locus/update.site/1.4.0-SNAPSHOT/update.site-1.4.0-SNAPSHOT.zip-unzip. -> [Help 1]