t4400-options-iw.sh failures with git 2.50.0

[winterheart]

Hitting during autobuild test failures in Gentoo: https://bugs.gentoo.org/959340

*** t4400-options-iw.sh ***
1..64
ok 1 - setup
ok 2 - verify setup
ok 3 - setup index and working tree
ok 4 - files
ok 5 - files -i
not ok 6 - files -w
#      failed: t4400-options-iw.sh:205: 6 - files -w
#
#       cat <<-EOT >expected &&
#               f4
#               f5
#       EOT
#       tg files -w >actual &&
#       test_cmp actual expected
#
ok 7 - patch
ok 8 - mail
not ok 9 - patch -i
#      failed: t4400-options-iw.sh:271: 9 - patch -i
#
#       cat <<-EOT >expected &&
#      From: Te s t (Author) <test@example.net>
#      Subject: [PATCH] branch t/tertiary
#      
#      ---
#       f3 | 1 +
#       1 file changed, 1 insertion(+)
#       create mode 100644 f3
#      
#      diff --git a/f3 b/f3
#      new file mode 100644
#      index 0000000000000000..$f3blob
#      --- /dev/null
#      +++ b/f3
#      @@ -0,0 +1 @@
#      +file3
#      
#      -- 
#      tg: ($secondarybase..) t/secondary (depends on: t/branch3)
#       EOT
#       tg patch -i >actual &&
#       test_cmp actual expected
#
ok 10 # skip mail -i (missing LASTOK of SETUP, LASTOK)
not ok 11 - patch -w
#      failed: t4400-options-iw.sh:312: 11 - patch -w
#
#       cat <<-EOT >expected &&
#      From: Te s t (Author) <test@example.net>
#      Subject: [PATCH] branch t/quaternary
#      
#      ---
#       f4 | 1 +
#       f5 | 1 +
#       2 files changed, 2 insertions(+)
#       create mode 100644 f4
#       create mode 100644 f5
#      
#      diff --git a/f4 b/f4
#      new file mode 100644
#      index 0000000000000000..$f4blob
#      --- /dev/null
#      +++ b/f4
#      @@ -0,0 +1 @@
#      +file4
#      diff --git a/f5 b/f5
#      new file mode 100644
#      index 0000000000000000..$f5blob
#      --- /dev/null
#      +++ b/f5
#      @@ -0,0 +1 @@
#      +file5
#      
#      -- 
#      tg: ($secondarybase..) t/secondary (depends on: t/branch4 t/branch5)
#       EOT
#       tg patch -w >actual &&
#       test_cmp actual expected
#
ok 12 # skip mail -w (missing LASTOK of SETUP, LASTOK)
ok 13 - prev
ok 14 - prev -i
ok 15 - prev -w
ok 16 - next
ok 17 - next -i
ok 18 - next -w
ok 19 - summary --deps-only
ok 20 - summary --deps-only -i
ok 21 - summary --deps-only -w
ok 22 - summary --deps
ok 23 - summary --deps -i
ok 24 - summary --deps -w
ok 25 - summary --rdeps --heads
ok 26 - summary --rdeps --heads -i
ok 27 - summary --rdeps --heads -w
ok 28 - summary -vl
ok 29 - summary -vl -i
ok 30 - summary -vl -w
ok 31 - summary @
ok 32 - summary -i @
ok 33 - summary -w @
ok 34 - summary
ok 35 - summary -i
ok 36 - summary -w
ok 37 - info
ok 38 - info -i
ok 39 - info -w
ok 40 - info -v
ok 41 - info -v -i
ok 42 - info -v -w
ok 43 - info -v -v
ok 44 - info -v -v -i
ok 45 - info -v -v -w
ok 46 - info --dependencies
ok 47 - info --dependencies -i
ok 48 - info --dependencies -w
ok 49 - info --dependents
ok 50 - info --dependents -i
ok 51 - info --dependents -w
ok 52 - info --series
ok 53 - info --series -i
ok 54 - info --series -w
ok 55 - info --leaves
ok 56 - info --leaves -i
ok 57 - info --leaves -w
ok 58 - info --heads
ok 59 - info --heads -i
ok 60 - info --heads -w
ok 61 - setup detached HEAD
ok 62 - detached info --heads
ok 63 - detached info --heads -i
ok 64 - detached info --heads -w
# t4400 failed 3 among 64 test(s)
make[5]: *** [Makefile.mak:129: t4400-options-iw.sh] Error 1
*** t4500-contains.sh ***