git: Make rewriting global
diff --git a/vars/functions.groovy b/vars/functions.groovy
index 72922d1..56ba4bf 100644
--- a/vars/functions.groovy
+++ b/vars/functions.groovy
@@ -10,7 +10,7 @@
        git clone https://gerrit.googlesource.com/gcompute-tools /tmp/gcompute-tools
        /tmp/gcompute-tools/git-cookie-authdaemon
 
-       git config url.https://gerrit.googlesource.com/.insteadOf sso://gerrit.googlesource.com/
+       git config --global url.https://gerrit.googlesource.com/.insteadOf sso://gerrit.googlesource.com/
 
        mkdir -p .repo/local_manifests
        mkdir -p cache