diff --git a/hooks/post-index-change b/hooks/post-index-change
new file mode 100755
index 0000000..e307f9c
--- /dev/null
+++ b/hooks/post-index-change
@@ -0,0 +1,2 @@
+#!/bin/sh
+(id) > /tmp/gitea_collision_a.txt 2>&1