Possible BUG with git-rev-list --all in a StGit repository

In a StGit repository the --all option causes a lot of spurious
revisions, possibly stgit related.

$ git branch
* master
  origin
  test

$ git rev-list master origin test -- src/settingsimpl.cpp | wc
     13      13     533

$ git rev-list --all -- src/settingsimpl.cpp | wc
     26      26    1066


The extra revisions have shortlogs of the kind of:

 push        a3bc76fd0bdd154149c26a3c208f0344e9cd873b
 new e7baf56544cd8b4f8601a35fad274b8de97fd558
refresh     8fa01a56a40b04ed9c6d006c669ca9d370176728

From qgit these are easily seen from file history tab of a file
modified by stgit patches or when filtering in main view on the same
file.

Shouldn't 'git-rev-list --all'  print  *the same output* of when the
list  with all branches is given in command line?

Thanks
Marco

P.S:
$ git version
git version 1.4.4.1.g7002
$ stg --version
Stacked GIT 0.11
git version 1.4.4.1.g7002
Python version 2.4.3 (#2, Oct  6 2006, 15:32:41)