Network problems during "git svn dcommit": need help!

Hello,

I am using git-svn to track a subversion repository. This used to work
fine so far. But today, I got a network outage during a "git svn dcommit"
operation. I can see with gitk, that not all of my commits made it to
the svn repositoy. I tried "git svn rebase" and "git svn dcommit" to
resume, but they act as if I had no local commits.

Any hints how to fix the situation?