Script downgrades ostree package

Running the script against the gnome-3-36 branch:

diff --git a/elements/core-deps/ostree.bst b/elements/core-deps/ostree.bst
index 88264d4b..83b3e4c5 100644
--- a/elements/core-deps/ostree.bst
+++ b/elements/core-deps/ostree.bst
@@ -2,7 +2,7 @@ kind: autotools
 
 sources:
 - kind: tar
-  url: github_com:ostreedev/ostree/releases/download/v2019.5/libostree-2019.5.tar.xz
+  url: gnome_downloads:ostree/2014.4/ostree-2014.4.tar.xz
   ref: 9568156d147865f0f744373288039dbde784c0cf1de37fdd2cacf4e950790875
 - kind: patch
   path: files/ostree/no-boot-symlink.patch
@@ -38,4 +38,4 @@ public:
     split-rules:
       devel:
         (>):
-        - "%{libdir}/libostree.so"
+        - '%{libdir}/libostree.so'