While the specific alphanumeric string doesn't point to one single famous "piece" in general public databases, this naming convention is typical for:
Technical videos for 3D modeling or game development (like those found on ArtStation or Gumroad). 5f8902af00328cd3e2fb1_source.mp4
If you found this in a specific community (like a Discord for digital painters or a subreddit for game dev), it likely refers to a for a tutorial or a high-quality animation loop. While the specific alphanumeric string doesn't point to