+git reset --hard startpoint
+t-git-next-date
+
+t-git-debrebase analyse >../anal.anch
+anchor=$(perl <../anal.anch -ne '
+ next unless m/^(\w+) Anchor\s/;
+ print $1,"\n";
+ exit;
+')
+
+t-git-debrebase --anchor=$anchor -fanchor-treated new-upstream-v0 $v