[GSOC][RFC PATCH 0/2] add-patch: compare object id

This patch series is RFC as this contains a partial behavior change. The first patch introduces a new function to compare object id instead of revision strings. The second patch removes the special case for HEAD in builtin/checkout.c.

This patch series enables for HEAD to be specified in any form and removes need to be kept a literal string 'HEAD'. Consequently, this removes the need to keep a special case for HEAD in callers of run_add_p() (as in builtin/checkout.c).

Additional context: https://lore.kernel.org/git/xmqqsgat7ttf.fsf@gitster.c.googlers.com/

Ghanshyam Thakkar (2):
  add-patch: compare object id instead of literal string
  checkout: remove HEAD special case

 add-patch.c               | 28 +++++++++++++++-------
 builtin/checkout.c        |  9 ++++---
 t/t2016-checkout-patch.sh | 50 +++++++++++++++++++++++----------------
 t/t2071-restore-patch.sh  | 21 ++++++++++------
 t/t7105-reset-patch.sh    | 14 +++++++++++
 5 files changed, 81 insertions(+), 41 deletions(-)