public String getFork() {
    return daggerOptions.provideFork().orElse(EvmSpecVersion.defaultVersion().getName());
  }
Returns the fork name provided by the Dagger options. If no fork is provided, it returns the
name of the default EVM specification version.

@return The fork name.
ethereum/evmtool/src/main/java/org/hyperledger/besu/evmtool/EvmToolCommand.java