Fix bug

make_artifacts.jl

@@ -109,7 +109,7 @@ function list_previous_artifacts()
     # to create the artifacts branch
     files = split(read(`git ls-tree -r --name-only $deploy_branch`, String))
     filter!(f -> endswith(f, ".tar.gz"), files)
-    return Dict(f => git_hash(f; deploy_branch) for f in files)
+    return Dict(f => git_hash(f; branch=deploy_branch) for f in files)
 end
 
 function list_new_folders()
@@ -156,6 +156,10 @@ function (@main)(args)
     end
 
     new_folders = list_new_folders()
+    if isempty(new_folders)
+        println("No new folders to process.")
+        return
+    end
 
     if !("dryrun" in args)
         clean_artifacts_dir() || return