Depends on where in Germany. In the west most pronounce it like K. Like the the word China is pronounce Kina with a hard K. In east and north it is pronounced like a german sch like Schina. The c together with a k like in „backen“ or „lecker“ just sounds like a second „k“ („lek-ker“)
I and my colleagues all pronounce CLI the English way btw. But growing up I had a hard time with the word „cache“. I pronounced it the German way which sounded very silly.
Ask a German speaker to say CLI. Probably comes out something like "clee". With the C like in "corn". C makes that hard German K sound.