const crypto/sha1.magic

7 uses

	crypto/sha1 (current package)
		sha1.go#L46: 	magic         = "sha\x01"
		sha1.go#L47: 	marshaledSize = len(magic) + 5*4 + chunk + 8
		sha1.go#L52: 	b = append(b, magic...)
		sha1.go#L65: 	if len(b) < len(magic) || string(b[:len(magic)]) != magic {
		sha1.go#L71: 	b = b[len(magic):]