diff --git a/misc/python3/depgraph.sh b/misc/python3/depgraph.sh
index 5f0ead395..fd08cb47b 100755
--- a/misc/python3/depgraph.sh
+++ b/misc/python3/depgraph.sh
@@ -30,7 +30,7 @@ git config user.email 'tahoe-dev@tahoe-lafs.org'
 git commit -am "\
 Built from ${CIRCLE_REPOSITORY_URL}@${CIRCLE_SHA1}
 
-tahoe-depgraph was $(git --git-dir ../.git rev-parse HEAD)
+tahoe-depgraph was $(git rev-parse HEAD)
 "
 
 # Publish it on GitHub.