Programatically get buildSrc dependencies

Recently I had unpleasant issue with duplicated and conflicting transitive dependencies between buildSrc and one of the plugins resulting in NoSuchMethodError (resolution strategy and exclusions don’t work at that level). I don’t know of any build-in way to display buildscript and buildSrc dependencies in Gradle. While buildscript dependencies can be gathered and displayed programatically in a custom task, I had problem with fetching buildSrc project - I couldn’t reference it using :buildSrc or any other way I tried.

Questions. How can I get (and display or process) buildSrc dependencies?