A git repository is a content-addressable object store where objects go in indexed by the SHA1 of their content, plus a set of named references pointing at specific objects by hash. The on-disk format (loose objects as individual files, packfiles as delta-compressed archives with a separate index, a ref store split between a directory of files and a packed-refs flat file with a locking protocol that breaks on NFS) is an implementation detail. The protocol for synchronising objects and refs between repositories is what actually matters, and since git-the-program is just one implementation of it, you can swap the storage backend without clients noticing.
Catherine SnowdonHealth reporter
。关于这个话题，91视频提供了深入分析
中华文明的连续性不仅载录于史书典籍中，更镌刻在物质文化与基因血脉的深处。多学科手段、方法的运用，使我们有能力借古人不经意间留下的一鳞半爪，窥见文明赓续的脉络。
1. 选择步长序列（如: n/2, n/4, ..., 1）