Http status code 403 stops ivy resolver?

An (ugly) workaround is to specify the ivy pattern for the repository, pointing to a server that will return a 404 instead of a 403.

buildscript {
    repositories {
        ivy {
            ivyPattern 'http://google.com/FAKE_URL/not_a_real_file.txt'
            artifactPattern 'http://cloud.github.com/downloads/[organisation]/[module]/[module]-[revision].[ext]'
        }
    }
    dependencies {
        classpath 'bmuschko:gradle-izpack-plugin:0.1'
    }
}