git-cvsimport is setting incorrect timestamps in the master reflog

When I run git-cvsimport, the timestamps that it shows in the reflog
for refs/heads/master do not reflect the actual times that the ref is
updated but rather reflect commit times in CVS.

In fact, it looks as if the reflog timestamp is always set to the
timestamp of the last patch appearing in the cvsps cache, regardless
of what branch that patch affects and regardless of when the actual
update to the local "master" ref took place.

Until yesterday, I was using git version 1.7.2.3, and as of yesterday
I upgraded to git version 1.7.3.3, which is currently the highest
version offered by Cygwin.  Both versions exhibit this behavior.