I think every "Fixed" should be accompanied by a git hash or link, but it's a bit awkward right now.

Would love it if 611effd could autocomplete to http://drupalcode.org/project/examples.git/commitdiff/611effd

Another way to do this is to get a simple filter deployed on d.o that does the conversion and then dreditor could create filter text. [git 611effd] [git examples 611effd] [git commitdiff 611effd] or something.