Description of problem:
Some artifacts (with identical GAV) that are present both in 5.3 Maven repo and 6.0 Maven repo differ binary (e.g. different .class files)
e.g. 
http://download.devel.redhat.com/brewroot/repos/soa-brms-6-build/latest/maven/org/sonatype/aether/aether-connector-wagon/1.13.1/

http://download.devel.redhat.com/brewroot/repos/soa-brms-5.3-updates-build/latest/maven/org/sonatype/aether/aether-connector-wagon/1.13.1/

As discussed with Julian, 6.0 repo should contain the exact same artifacts as 5.3 repo. 


List of artifacts that might binary differ in 5.3 and 6.0 repos:
org/apache/maven/maven-repository-metadata/3.0.3/maven-repository-metadata-3.0.3.jar
org/sonatype/aether/aether-api/1.13.1/aether-api-1.13.1.jar
org/apache/maven/maven-compat/3.0.3/maven-compat-3.0.3.jar
org/sonatype/aether/aether-connector-wagon/1.13.1/aether-connector-wagon-1.13.1.jar
org/sonatype/aether/aether-connector-file/1.13.1/aether-connector-file-1.13.1.jar
org/sonatype/aether/aether-spi/1.13.1/aether-spi-1.13.1.jar
aopalliance/aopalliance/1.0/aopalliance-1.0.jar
org/apache/maven/maven-aether-provider/3.0.3/maven-aether-provider-3.0.3.jar
org/apache/maven/maven-model-builder/3.0.3/maven-model-builder-3.0.3.jar
org/beanshell/bsh/2.0b4/bsh-2.0b4.jar
org/apache/maven/maven-artifact/3.0.3/maven-artifact-3.0.3.jar
org/apache/maven/maven-model/3.0.3/maven-model-3.0.3.jar
org/sonatype/aether/aether-util/1.13.1/aether-util-1.13.1.jar
org/apache/maven/maven-core/3.0.3/maven-core-3.0.3.jar
org/apache/maven/maven-settings/3.0.3/maven-settings-3.0.3.jar
org/apache/maven/maven-settings-builder/3.0.3/maven-settings-builder-3.0.3.jar
org/sonatype/aether/aether-impl/1.13.1/aether-impl-1.13.1.jar

Note: There could be false positives in the list and also more artifacts could be affected, the above are just artifacts found in B[PR]MS.