+ # Another situation we may have to cope with is gbp-style
+ # patches-unapplied trees. We want to detect these, so we know
+ # to escape into quilt_fixup_gbp.
+ #
+ # A gbp-style tree is one which is not a clean patches-applied
+ # tree, but _is_ a clean patches-unapplied tree.
+ #
+ # To help detect this, when we are extracting the fake dsc, we
+ # first extract it with --skip-patches, and then apply the patches
+ # afterwards with dpkg-source --before-build. That lets us save a
+ # tree object corresponding to .origs.
+