Corda/samples documents https://github.com/corda/samples/tree/4.3-RC01
do not contain information on the process of running the samples against the exact release.
For example, IOU demo sample https://github.com/corda/samples/tree/4.3-RC01/cordapp-example does not contain steps, performing which a user can be sure that he is running the sample correctly against the release he needs.
Clone the samples repository from using the following command: git clone https://github.com/corda/samples
Steps: compilling correct cordapps, placing jar file with the needed version, etc.