More debugging.

gh-assets-clone.sh

-#!/bin/bash -x
+#!/bin/bash
 # Script to setup the assets clone of the repository using GIT_ASSETS_BRANCH and
 # GIT_API_KEY.

postgres-metrics-get-changes.sh

@@ -3,7 +3,9 @@
 # output by the exporter and then build lists of added/removed metrics.
 old_src="$1"
-[ ! -e "$old_src" ] && exit 1
+if [ ! -d "$old_src" ] ; then
+    mkdir -p "$old_src"
+fi
 function generate_add_removed() {
     type="$1"