Function with_cloned_context 

pub fn with_cloned_context<CTX: EthCheatCtx>(
    ecx: &mut CTX,
    f: impl FnOnce(&mut dyn DatabaseExt<CTX::Block, CTX::Tx, <CTX::Cfg as Cfg>::Spec>, EvmEnv<<CTX::Cfg as Cfg>::Spec, CTX::Block>, CTX::Tx, JournaledState) -> Result<(EvmEnv<<CTX::Cfg as Cfg>::Spec, CTX::Block>, JournaledState), EVMError<DatabaseError>>,
) -> Result<(), EVMError<DatabaseError>>

Clones the current context (env + journal), passes the database, cloned env, and cloned journal inner to the callback. The callback builds whatever EVM it needs, runs its operations, and returns (result, modified_env, modified_journal). Modified state is written back after the callback returns.