This is because it is not always possible to tell: a patches-unapplied
git branch of a package with one patch, for example, looks very like
a patches-applied branch where the user has used git revert to
undo the patch, expecting to actually revert it.
However, if you fail to specify the right \-\-quilt option,
and you aren't too lucky, dgit will notice the problem and stop,
This is because it is not always possible to tell: a patches-unapplied
git branch of a package with one patch, for example, looks very like
a patches-applied branch where the user has used git revert to
undo the patch, expecting to actually revert it.
However, if you fail to specify the right \-\-quilt option,
and you aren't too lucky, dgit will notice the problem and stop,