diff --git a/make/topdir.mk b/make/topdir.mk
index f0b1e028..dec09a26 100644
--- a/make/topdir.mk
+++ b/make/topdir.mk
@@ -167,3 +167,6 @@ list-text-files echo-text-files:
 git-ssh-%:
 	bash -c "`git remote get-url --push $* | sed 's|ssh://||; s|\([^/]\+\)/\(.*\)|LC_CDPATH=/\2 ssh -o SendEnv=LC_CDPATH \1|'`"
 git-ssh: git-ssh-origin
+
+echo-hash:
+	@/bin/bash $(MOD_SCRIPT_DIR)/pkg.sh hash