push (perhaps enabled automatically by a note left by rebase-prep)
which will make the required pseudo-merge.
+If the dgit push fails halfway through, it should be restartable and
+idempotent. However this is not true for the git tag operation.
+
dgit's handling of .orig.tar.gz is not very sophisticated. Ideally
the .orig.tar.gz could be transported via the git repo as git tags.
Doing this is made more complicated by the possibility of a `3.0