# List checkpoints
; LAR/LSL/VERR/VERW (verification instructions)，这一点在夫子中也有详细论述
An object’s OID is computed the same way git does it, SHA1(" \0"), using pgcrypto’s digest() function, and refs get compare-and-swap updates through SELECT FOR UPDATE. A libgit2 backend registers these tables as its storage layer, and if the protocol really is separable from the format, a normal git client should be able to push to and clone from a Postgres database without knowing the difference.。WPS官方版本下载对此有专业解读
self.http_client = HttpClient(self.config)，更多细节参见safew官方下载