trace2-target-values

0 or false - Disables the target.

1 or true - Writes to STDERR.

[2-9] - Writes to the already opened file descriptor.

<absolute-pathname> - Writes to the file in append mode. If the target already exists and is a directory, the traces will be written to files (one per process) underneath the given directory.

af_unix:[<socket-type>:]<absolute-pathname> - Write to a Unix DomainSocket (on platforms that support them). Socket type can be either stream or dgram; if omitted Git will try both.