Capitalization change in linux tool breaks xfstests

xfstests generic/029, generic/030 and generic/031 now break with
current Ubuntu (26.04) due to a change in capitalization of hexdumps
in some tooling.  See below.  Has anyone found a way to workaround
this?

generic/029  1s ... - output mismatch (see
/home/smfrench/xfstests-dev/results//sambamfs/generic/029.out.bad)
    --- tests/generic/029.out 2025-08-22 09:54:32.256748004 -0500
    +++ /home/smfrench/xfstests-dev/results//sambamfs/generic/029.out.bad
2026-05-30 17:23:49.298460413 -0500
    @@ -42,10 +42,10 @@
     000600 57 57 58 58 58 58 58 58 58 58 58 58 58 58 58 58  >WWXXXXXXXXXXXXXX<
     000610 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58  >XXXXXXXXXXXXXXXX<
     *
    -0007f0 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 59  >XXXXXXXXXXXXXXXY<
    +0007F0 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 59  >XXXXXXXXXXXXXXXY<
     000800 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59  >YYYYYYYYYYYYYYYY<
     *
    ...
    (Run 'diff -u /home/smfrench/xfstests-dev/tests/generic/029.out
/home/smfrench/xfstests-dev/results//sambamfs/generic/029.out.bad'  to
see the entire diff)
generic/030  0s ... - output mismatch (see
/home/smfrench/xfstests-dev/results//sambamfs/generic/030.out.bad)
    --- tests/generic/030.out 2025-08-22 09:54:32.257748640 -0500
    +++ /home/smfrench/xfstests-dev/results//sambamfs/generic/030.out.bad
2026-05-30 17:23:49.845293290 -0500
    @@ -4,50 +4,50 @@
     ==== Pre-Remount ===
     000000 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58 58  >XXXXXXXXXXXXXXXX<
     *
    -4e6400 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59  >YYYYYYYYYYYYYYYY<
    +4E6400 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59 59  >YYYYYYYYYYYYYYYY<
     *
    -4e7000
    ...
    (Run 'diff -u /home/smfrench/xfstests-dev/tests/generic/030.out
/home/smfrench/xfstests-dev/results//sambamfs/generic/030.out.bad'  to
see the entire diff)
generic/031  0s ... - output mismatch (see
/home/smfrench/xfstests-dev/results//sambamfs/generic/031.out.bad)
    --- tests/generic/031.out 2025-08-22 09:54:32.257748640 -0500
    +++ /home/smfrench/xfstests-dev/results//sambamfs/generic/031.out.bad
2026-05-30 17:23:50.167877492 -0500
    @@ -6,14 +6,14 @@
     ==== Pre-Remount ===
     000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  >................<
     *
    -01f860 00 00 00 00 00 00 00 00 00 00 00 00 cd cd cd cd  >................<
    -01f870 cd cd cd cd cd cd cd cd cd cd cd cd cd cd cd cd  >................<
    +01F860 00 00 00 00 00 00 00 00 00 00 00 00 cd cd cd cd  >................<
    +01F870 cd cd cd cd cd cd cd cd cd cd cd cd cd cd cd cd  >................<
    ...

-- 
Thanks,

Steve