Arthur: update tf-sync-repos

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: Idfb2d3910917b9ab5effc8bd0189e649d60edb19
diff --git a/tf-sync-repos.yaml b/tf-sync-repos.yaml
index ef0a7f6..030848d 100644
--- a/tf-sync-repos.yaml
+++ b/tf-sync-repos.yaml
@@ -12,8 +12,9 @@
         echo "    Gerrit Environment"
         env |grep '^GERRIT'
         echo "########################################################################"
-    - shell: |-
-        bash "$CI_ROOT/ci/tf-sync-repos.sh"
+        mkdir -p ci
+        wget -q https://git.trustedfirmware.org/next/ci/tf-ci-scripts.git/plain/ci/tf-sync-repos.sh -O ci/tf-sync-repos.sh
+        bash ci/tf-sync-repos.sh
     properties:
     - build-discarder:
         num-to-keep: 10
@@ -22,6 +23,7 @@
             url: https://review.trustedfirmware.org/${GERRIT_PROJECT}
             branches:
                 - master
+            local-branch: master
             skip-tag: true
             clean:
                 before: true