upload-pack: send refs' objects despite "filter"

A filter line in a request to upload-pack filters out objects regardless
of whether they are directly referenced by a "want" line or not. This
means that cloning with "--filter=blob:none" (or another filter that
excludes blobs) from a repository with at least one ref pointing to a
blob (for example, the Git repository itself) results in output like the
following:

    error: missing object referenced by 'refs/tags/junio-gpg-pub'

and if that particular blob is not referenced by a fetched tree, the
resulting clone fails fsck because there is no object from the remote to
vouch that the missing object is a promisor object.

Update both the protocol and the upload-pack implementation to include
all explicitly specified "want" objects in the packfile regardless of
the filter specification.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/object.h b/object.h
index 5c13955..cf8da6b 100644
--- a/object.h
+++ b/object.h
@@ -27,7 +27,7 @@ struct object_array {
 
 /*
  * object flag allocation:
- * revision.h:               0---------10                                26
+ * revision.h:               0---------10                              2526
  * fetch-pack.c:             0----5
  * walker.c:                 0-2
  * upload-pack.c:                4       11----------------19