python -m geojson2osm your_geojson_file.geojson output.osm

import json
from geojson2osm import geojson2osm

# Load your GeoJSON data
geojson_data = json.load(open('your_geojson_file.geojson'))

# Convert the GeoJSON data to OSM XML format
osm_xml = geojson2osm(geojson_data)

# Save the OSM XML data to a file
with open('output.osm', 'w') as output_file:
    output_file.write(osm_xml)