Returning emitting same output path as input path?

I have a process that takes a path(reference) as input and emits path(reference) as output. The reference is staged in the work directory so that the emitted reference path is not the same as the input reference path. Is it possible to make the process emit the original path that was input to the process rather than the path after it was staged?

You could use the channel that went into your process instead of taking the output from that process.