Project TBB dead link, 404
On https://www.torproject.org/projects/torbrowser.html.en at ALPHA ( Also, note that the Firefox ESR in our bundles is modified...) you place https://gitweb.torproject.org/torbrowser.git/blob_plain/HEAD:/build-scripts/config/ which gives me a 404.
https://gitweb.torproject.org/torbrowser.git/tree/HEAD:/build-scripts/config does exist (I hope it should be that link)