Use fp2-m-sibon branch for busybox
diff --git a/default.xml b/default.xml
index cf92e4a..af72600 100644
--- a/default.xml
+++ b/default.xml
@@ -437,5 +437,5 @@
   <project name="fp2/vendor/fairphone/updater" path="vendor/fairphone/updater" revision="refs/tags/release-1.39.9"/>
   <project name="fp2/vendor/fairphone/packages/apps/ProximitySensor" path="vendor/fairphone/packages/apps/ProximitySensor" revision="refs/tags/release_2.2.1-MR2"/>
   <project name="fp2/system/extras/appops_su" path="system/extras/appops_su" />
-  <project name="fp2/platform/external/busybox" path="external/busybox" />
+  <project name="fp2/platform/external/busybox" path="external/busybox" revision="fp2-m-sibon" />
 </manifest>