dist-git tag question

[Peter Hutterer]

Apologies if this was asked for and answered in another thread, I lost
overview. Ralf and Kevin made me realise something that I have
misinterpreted initially in regards to how packages are tagged now.

https://fedoraproject.org/wiki/Using_Fedora_GIT claims that tagging is not
necessary and that the commitid is now submitted to koji. fair enough, but
the confusing thing here is:
"When successful on Koji, the build will trigger the package to be tagged
with the corresponding tag (e.g., dist-f15 for Rawhide [...]"

does this mean the dist-f15 tag is forcibly updated each time a build is
successful? If so, where is this tag hiding? I can't seem to get it into my
repo even though it is listed as a koji tag in the emails. Or are we not
talking about git tags here anyway?

The other question and that may just be a feature request: 
the CVS tags are still visible in my repo, e.g.
mtdev-1_0_1-1_20100706_fc14. these tags are useful, because in a few weeks
time I won't be able to remember the commit ID of a specific version (I know
I can get it from the logs, but it's annoying).

If a build succeeds and is to be released as a package, can koji apply the
tag again to the git repo? It would allow for simple things like git diff
foo-1.1-2.fc12..foo-1.1-3.fc13.

Cheers,
  Peter