entries, passes the SHA1 hash for those files as arguments 1, 2, 3 (empty
argument if no file), and <file> as argument 4. File modes for the three
files are passed as arguments 5, 6 and 7.
entries, passes the SHA1 hash for those files as arguments 1, 2, 3 (empty
argument if no file), and <file> as argument 4. File modes for the three
files are passed as arguments 5, 6 and 7.