Ignore cloning if already exists

[YuviGold]

When running in multi-runs, it would be really helpful to have the option to ignore an extra clone operation and override existing data when the clone already exists

It should be modifiable by a flag.
Depends on the default case

• if by default it would ignore then add a --force flag to override.
• otherwise, a flag such as --skip-if-exists, --ignore-existing, --no-overwrite