Git `handleBinary` does not work with bare repository

[rgmz]

Please review the Community Note before submitting

TruffleHog Version

HEAD

Description

When using TruffleHog with a bare repository, the handleBinary function fails:

$ git clone git@github.com:rgmz/example.git --mirror
$ trufflehog git file:///tmp/example.git/ --bare
🐷🔑🐷  TruffleHog. Unearth your secrets. 🐷🔑🐷

2024-06-23T17:52:37-04:00       info-0  trufflehog.git  Using concurrency       {"concurrency": 20}
2024-06-23T17:52:37-04:00       info-0  trufflehog      running source  {"with_units": true}
2024-06-23T17:52:37-04:00       info-0  trufflehog      scanning repo   {"unit": "/tmp/example.git/", "unit_kind": "dir", "path": "/tmp/example.git/"}
2024-06-23T17:52:41-04:00       error   trufflehog      waiting for command failed      {"unit": "/tmp/example.git/", "unit_kind": "dir", "error": "error waiting for command: command=/usr/bin/git -C /tmp/example.git/.git cat-file blob 8faab40266603974595b3cbdc14d245a007fa104:example_binary.exe, stderr=fatal: cannot change to '/tmp/example.git/.git': No such file or directory\n, commit=8faab40266603974595b3cbdc14d245a007fa104: exit status 128"}

This is caused by gitDir being hard-coded as path + .git, which doesn't exist for bare repositories.

https://github.com/trufflesecurity/trufflehog/blob/de19a39f2cc6a103a4e207b780716d46e77de732/pkg/sources/git/git.go#L1224 https://github.com/trufflesecurity/trufflehog/blob/de19a39f2cc6a103a4e207b780716d46e77de732/pkg/sources/git/git.go#L562