git-deps -e or --exclude-commits still shows cherry-picked commits

git-deps -r -e test_branch dbde0abe, shows

dbde0abe 7a4c5de2
dbde0abe fa77dcfa
fa77dcfa fd034a84
fa77dcfa 813e5727

Even though 'test' branch has the commit 'fa77dcfa' cherry-picked from master,

commit d14423fe
Author: Test
Date: Mon Apr 11 19:11:04 2011 -0400

Test
(cherry picked from commit fa77dcfa)

git-deps will show in the list of dependent commit.

Start by reproducing the `git-deps -r -e test_branch dbde0abe` case with a cherry-picked commit, then trace the CLI path handling `-e` and the dependency graph. Confirm that the cherry-picked commit is excluded from the reported dependencies while ordinary dependencies remain visible.

Written by the indexing model from the issue text.