== Original (version 1) pack-*.idx files have the following format: - The header consists of 256 4-byte network byte order integers.

Package packfile documentation: GIT pack format =============== == pack-*.pack files have the following format: - A header appears at the beginning and consists of the following: 4-byte signature: The signature is: {'P', 'A', 'C', 'K'} 4-byte version number (network byte order): GIT currently accepts version number 2 or 3 but generates version 2 only.