Source Control Management: Use latest remote HEAD on clone & ensure required commit is fetched

Imagine a situation:

• Operation 1

• Worker 1: clone repo, a1 branch, head at A

• Operation 1 finished

• Commit B is added to git a1 branch

• Operation 2

• Worker 2: clone repo, a2 branch, head at B is returned

• Worker 1: getFileHash(file, B)

• Worker 1: Can't find commit B, failed

• Operation 2 failed

Overall, you need to handle this by

• Always fetching for clone() to ensure latest remote HEAD is returned

• For other operations either fetch always or handle the use case where commit is not found, then fetch and retry