Tortoise Git repo-browser can be launched by command: <path to TortoiseGit>\bin\TortoiseGitProc.exe /command:repobrowser /path:<the repo>

However, any command line argument does not pass the check of the git setting about the repo browser in QtC. If I only specify "<path to TortoiseGit>\bin\TortoiseGitProc.exe" in the setting and click apply, QtC crashes. And then next time it starts up, I'm allowed to click "Tools > Git > Git Tools > Repository Browser". However nothing happens after I click that.