actually, I'd rather not copy files not tracked by git

action.yml

@@ -60,8 +60,21 @@ runs:
 
         export GIT_SSH_COMMAND='ssh -i ~/.ssh/ssh_key -o IdentitiesOnly=yes'
         git clone "ssh://aur@aur.archlinux.org/$pkgbase.git" aur
-        find aur -maxdepth 1 -type f | (set -x; while read file; do rm -f "$file"; done)
-        find . -maxdepth 1 -type f | (set -x; while read file; do cp "$file" aur; done)
+        find aur -maxdepth 1 -type f \
+          | while read file
+            do
+              echo "Removing old file $file ..."
+              rm -f "$file"
+            done
+        git ls-tree --name-only HEAD \
+          | while read file
+            do
+              if [ -f "$file" ]
+              then
+                echo "Copying  new file $file ..."
+                cp "$file" aur
+              fi
+            done
         cd aur
         git add .
         git config user.name "${{github.event.head_commit.committer.name}}"