to use terraagrunt provider manager use this

source = "git::[email protected]:/rafilkmp3/terraform-aws-acm-cloudflare.git//?ref=v1.0.1"

to avoid break anything for you use this tag

source = "git::[email protected]:/rafilkmp3/terraform-aws-acm-cloudflare.git//?ref=v1.0.0"