gpg.exe (part of Git-Bash) crashes with “fatal error - add_item” (Windows)

Question

When running the gpg.exe command (part of Git-Bash) I get the following error:

gpg (5076) C:\some_path\Git\usr\bin\gpg.exe: *** fatal error - add_item ("\??\C:\some_path\Git", "/", ...) failed, errno 1
Stack trace:

Frame        Function    Args
000FFFFCCE0  001800638AE (00180288FCA, 00180263FD1, 00800000000, 000FFFF8B50)
000FFFFCCE0  0018004973A (00000000000, 000FFFFCCE0, 00180020010, 000FFFFABFE)
000FFFFCCE0  00180049772 (000FFFF9BD0, 00000000001, 00800000000, 525C3A425C3F3F5C)
000FFFFCCE0  001800EB3EF (00000000000, 00040000024, 00000000000, 00000000000)
000FFFFCCE0  0018013DE25 (001800D212A, 00000000000, 00000000000, 00000000000)
000FFFFCCE0  00180049D95 (00000000000, 00000000000, 00000000000, 00000000000)
000FFFFFFF0  00180048846 (00000000000, 00000000000, 00000000000, 00000000000)
000FFFFFFF0  001800488F4 (00000000000, 00000000000, 00000000000, 00000000000)

I am calling it using subprocess.run with shell=True on a Windows server, but I can also reproduce this crash in powershell.

Answer 1

What worked was to "tunnel" the entire call through the bash.exe:

C:\some_path\Git\usr\bin\gpg.exe arg1 arg2

becomes

C:\some_path\Git\bin\bash.exe -c "gpg arg1 arg2"

and the issue mysteriously disappears!