Git Requirements

1. Clone the Repository

   1. when a pipeline is registered, should clone the repository

   2. Errors:

      1. if the repository does not exist

      2. if the repository is private

      3. if the repository is not accessible

2. Pull the Repository

   1. initialized pipeline, whenever run-pipeline is called, should pull the repository for latest updates

   2. Bonus: return a message if the repository is up-to-date or a list of commits since the last pull

   3. Errors:

      1. if the repository does not exist (anymore)

      2. if the repository is now private

      3. if the repository is not accessible anymore