[PATCH v2 0/4] Don't lazy-fetch commits when parsing them

Thanks everyone for your reviews. Here is a reroll with the requested change (just one small one).

Jonathan Tan (4):
  object-file: reread object with exact same args
  object-file: refactor corrupt object diagnosis
  object-file: refactor replace object lookup
  commit: don't lazy-fetch commits

 commit.c       | 18 ++++++++++++++--
 object-file.c  | 57 ++++++++++++++++++++++++++++++++++----------------
 object-store.h | 10 +++++++++
 3 files changed, 65 insertions(+), 20 deletions(-)

Range-diff against v1:
1:  604160e79c = 1:  604160e79c object-file: reread object with exact same args
2:  a8c5fcd9f8 ! 2:  1be60f1bf2 object-file: refactor corrupt object diagnosis
    @@ object-file.c: void *read_object_file_extended(struct repository *r,
      
      	/* die if we replaced an object with one that does not exist */
     -	if (repl != oid)
    -+	if (real_oid != oid)
    ++	if (!oideq(real_oid, oid))
      		die(_("replacement %s not found for %s"),
     -		    oid_to_hex(repl), oid_to_hex(oid));
     +		    oid_to_hex(real_oid), oid_to_hex(oid));
3:  940396307f = 3:  28935ba1b0 object-file: refactor replace object lookup
4:  6af8dcebd1 = 4:  a38229c42a commit: don't lazy-fetch commits