Von der Ukraine ausgebildete und von der Türkei unterstützte syrische Rebellen führen Angriff auf Aleppo an

That appears to be pure propaganda. HTS, the leading group, has a long history.
This is Ukrainian media attempting to take credit for everything as long as it is against Russia, which is understandable, but let us not attempt to exaggerate their influence in Africa and the Middle East.
https://acleddata.com/2023/07/26/actor-profile-hayat-tahrir-al-sham-hts/