[PATCH v2 0/4] Fix use of uninitialized hash algorithms

[Junio C Hamano <gitster@pobox.com>]

The series adds an escape hatch to "the default hash algorithm is
no longer SHA-1; it is an error to rely on the default" by
introducing an undocumented GIT_TEST_DEFAULT_HASH_IS_SHA1=1
environment variable that users can set after reporting an failure
they saw to us.

We can see that Patrick's two fixes to patch-id and hash-object
corrects the breakage as the series progresses.

Junio C Hamano (2):
  setup: add an escape hatch for "no more default hash algorithm" change
  t1517: test commands that are designed to be run outside repository

Patrick Steinhardt (2):
  builtin/patch-id: fix uninitialized hash function
  builtin/hash-object: fix uninitialized hash function

 builtin/hash-object.c   |  7 +++++
 builtin/patch-id.c      | 13 +++++++++
 repository.c            | 24 ++++++++++++++++
 t/t1007-hash-object.sh  |  6 ++++
 t/t1517-outside-repo.sh | 61 +++++++++++++++++++++++++++++++++++++++++
 t/t4204-patch-id.sh     | 34 +++++++++++++++++++++++
 t/test-lib.sh           |  4 +++
 7 files changed, 149 insertions(+)
 create mode 100755 t/t1517-outside-repo.sh

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2.45.0-145-g3e4a232f6e