"depends_build-append port:git-core" actually needed for git fetching?

[Marko Käning]

When I want to make sure that a port can be fetched via git is this port file addition:
---
	depends_build-append port:git-core
---
actually needed or will it implicitly being handled by macports itself, because fetch.type already knows what's necessary.
(Now that I think about it, I believe that I could fetch sources also w/o the above port dependency to git-core.)