Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7326>
Make all git clones depth=1 and switch opus to the tarball. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6351>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5105>