No verifiable academic, scientific, or historical document links the four terms together. The combination is anomalous. This report breaks down each term individually, assesses possible cross-connections, and concludes that the phrase likely originates from a fictional setting, a misspelling, or a conceptual art project.
For reference, the "Martian Mongol" is described in exclusive witness testimonies with the following attributes: martian+mongol+heleer+exclusive
Inside Mongolia's 'Mars camp': The extreme adventure ... - CNN For reference, the "Martian Mongol" is described in
"Exclusivity is not ownership," he told them. "It is stewardship. We do not seek to lock the past away. We want to understand it, to teach it on our terms so it does not rot behind a glass shelf. We will go to the vault not to plunder but to translate." We do not seek to lock the past away
Combined, the phrase doesn’t match any meaningful product, historical event, scientific mission, cultural term, or media title I can confirm. It may be:
" (2015), possibly on an exclusive platform or through a specific paper/media source. "The Martian" in Mongolian (Mongol Heleer)