The OP readme is asking to run a different install script using the same method.
curl --proto '=https' --tlsv1.2 -sSf hxxps://raw.githubusercontent.com/Exein-io/pulsar/main/pulsar-install.sh | sh
When I responded their comment read
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
The OP readme is asking to run a different install script using the same method.