[BUG] Strange git notes completion behaviour

Hi All,

I tried the following in git 2.51.0 on NonStop (big endian x86):

git notes add -m "Test Note" HEAD git notes show HEAD

The git notes show reports a completion code of 037777777764 (-12). This gets hidden by bash, which truncates negative results so it shows as 0, not -12. This only seems to happen in git notes show, not any other commands or sub-commands. I checked in gdb and this is in fact happening. Anywhere I can look to try to find where this is failing?

--Randall