fix(fetch): Include revision in hashing for pypi

[xtexx]

Hashing only the URL part will lead to dirty caches.

[what-the-diff]

PR Summary

• Removed the hash_url function
  An old function used called hash_url has been removed to allow for better practices.

• Introduced a new function for generating hashes
  A new function named hash_source_uri has been introduced. It is designed to generate a unique identification code (hash) based on several elements including the URL's type, the specific URL, any revisions, and the branch it's associated with. This new method is more reliable.

• Updated the fetch_source function
  The fetch_source function that is used to retrieve data now uses the new hash_source_uri function. These adjustments contribute to more efficient data retrieval.

• Adjusted file path utilization
  The way file paths are used in tarball_fetch function, which is used for data extraction, has been slightly altered. Now, it utilises source name instead of the hashed filename. This change simplifies data tracking.

• Added test for new function
  Testing for the new function, hash_source_uri, has been included to confirm it generates unique identification codes for different inputs. This adds assurance on the reliability of the function.