Re: [Outreachy][PATCH v7] t6050: avoid pipes with upstream Git commands

> From: Chizoba ODINAKA <chizobajames21@gmail.com>
> 
> In pipes, the exit code of a chain of commands is determined by
> the final command. In order not to miss the exit code of a failed
> Git command, avoid pipes instead write output of Git commands
> into a file.
> For better debugging experience, instances of "grep" were changed
> to "test_grep". "test_grep" provides more context in case of a
> failed "grep".