self-updating post-receive. this is an awful idea

hooks/post-receive

@@ -3,8 +3,7 @@ set -e -u -o pipefail
 
 while read oldrev newrev ref
 do
-    if [[ $ref =~ .*/main$ ]];
-    then
+  if [[ $ref =~ .*/main$ ]]; then
     echo "main ref received"
 
 		echo "moving into temporary work tree"; {
@@ -23,5 +22,9 @@ do
     echo "restarting server"; {
       podman-compose restart || podman compose up
     }
+
+    echo "updating post-receive hook for future runs"; {
+      cp hooks/post-receive $0
+    }
   fi
 done