Git LFS
Internal
Overview
Git LFS is a system for managing and versioning large files in association with a Git repository. Instead of storing the large files within the Git repository as blobs, Git LFS stores special "pointer files" in the repository, while storing the actual file contents on a Git LFS server. The contents of the large file are downloaded automatically when needed, for example when a Git branch containing the large file is checked out.
Git LFS works by using a "smudge" filter to look up the large file contents based on the pointer file, and a "clean" filter to create a new version of the pointer file when the large file's contents change. It also uses a pre-push hook to upload the large file contents to the Git LFS server whenever a commit containing a new large file version is about to be pushed to the corresponding Git server.