Replace a loop around an enter_repo() call, which was used to retry
a single time with a different parameter in case the first call fails,
with two calls and an if. This is shorter and cleaner.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>