diff --git a/doc/development/design/index.mdwn b/doc/development/design/index.mdwn
index 4cdb150..fe8d736 100644
--- a/doc/development/design/index.mdwn
+++ b/doc/development/design/index.mdwn
@@ -346,6 +346,8 @@
         + if have `git`
             + Have metadata to repo elsewhere on FS
                 + if repo is `git` and have `git`, can use `git worktree`
+                + Trick that I use: to do processing on a separate FS, check
+                  out a fresh copy of the repository to a `git worktree`.
             + else `git clone`
         + else
             + fetch over HTTP using host specific tarball?