fswatch command fires multiple events for a single move operation

Question

I have a photos.sh file (osascript set to JavaScript):

#!/usr/bin/osascript -l JavaScript

function run(argv) {
    return importFileIntoPhotos(argv[0])
};

// importFileIntoPhotos :: FilePath -> IO ()
const importFileIntoPhotos = fp => {
    const 
        appPhotos = Application("Photos");
    return appPhotos.import([Path(fp)])
};

and, the following test.sh file:

#!/bin/zsh

fp="$HOME/Documents/Samsung T5"

fpScript="$HOME/Library/CloudStorage/Dropbox/VSC Files/Automation/Manuel/photos.sh"

fswatch -0 -event-flags -r --exclude=".*\.DS_Store" "$fp" | xargs -0 -n1 -r -I {} "$fpScript" "{}"

I execute test.sh in Terminal. With that process open, whenever I move a single photo into fp folder, the same photo is imported multiple times into ​Photos​ app. Then, I have to kill the process.

How can I fix this issue, and import a single photo corresponding to a single move operation ?

Specs:

MacBook Air M1 with macOS Ventura

UPDATE:

Upon further testing, I have more clarity about the issue. Whenever the file is imported into Photos, a new event is sent (and captured) by fswatch, so it gets triggered again.

UPDATE 2:

Now, the act of importing into Photos doesn't trigger an event that could be captured by fswatch, and also doesn't trigger duplicated events. Not sure what happened.

UPDATE 3:

The issue persists. I tried opening the file in Preview app and the same is happening again. I get duplicated events. I am not sure why the act of opening that file in Preview is detected by fswatch.