char *line = packet_read_line(fd, &len);
const char *arg;
- if (!len)
- die(_("git fetch-pack: expected ACK/NAK, got EOF"));
+ if (!line)
+ die(_("git fetch-pack: expected ACK/NAK, got a flush packet"));
if (!strcmp(line, "NAK"))
return NAK;
if (skip_prefix(line, "ACK ", &arg)) {