Can't Capture Git Command Full Output Stream [duplicate]

When trying to capture git output stream to a file some of the output printed on the screen doesn't make it to the file.

to reproduce:

git show -s --oneline

the output on the console should be something similar to this:

1580ab93 (HEAD -> branch/name) some commit message

but when try to redirect the output to a file like this:

git show -s --oneline > file.txt

the output that get redirected to the file is just this:

1580ab93 some commit message

Can someone who knows the reason why this happens elaborate more and maybe suggest a solution or a workaround to be able to capture the full output from the command to my file.

Note: my final reach is to capture the output from a python script not just to a file.

Thanks