Following are a number of back-translations as well as a sample translation for translators of Jeremiah 48:45:

• Kupsabiny: “Those who flee have gone until
  they (stand) perplexed in Heshbon
  because that place has also been set on fire
  the fire is burning (fiercely) in the home/palace of Sihon.
  I have sent that fire to the whole country
  and destroyed the stupid people.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “The pitiful ones (who) have-escaped want to flee to Heshbon. But this Heshbon that was ruled-over before by King Sihon (is)-burning with fire. The mountains which (are) the hiding-place of (those) from-Moab who want battle/war are-being-devoured (by fire).” (Source: Hiligaynon Back Translation)
• English: “The people will flee as far as Heshbon city,
  but they will not be able to go any further,
  because a fire will burn in Heshbon,
  which is the city where King Sihon lived long ago,
  and it will burn up all the people in Moab
  who noisily/loudly boasted very much.” (Source: Translation for Translators)