Update the tracking references only if they were succesfully updated on remote
It fixes the bug where local tracking branches were filled with zeroed SHA-1 if the remote branch was not updated because, for instance, it was not an ancestor of the local (i.e. had other changes). Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>maint
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				|  | @ -349,7 +349,8 @@ static int send_pack(int in, int out, struct remote *remote, int nr_refspec, cha | |||
|  | ||||
| 	if (!dry_run && remote && ret == 0) { | ||||
| 		for (ref = remote_refs; ref; ref = ref->next) | ||||
| 			update_tracking_ref(remote, ref); | ||||
| 			if (!is_null_sha1(ref->new_sha1)) | ||||
| 				update_tracking_ref(remote, ref); | ||||
| 	} | ||||
|  | ||||
| 	if (!new_refs && ret == 0) | ||||
|  |  | |||
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	 Alex Riesen
						Alex Riesen