I have Makefile2 of context below

test_0.o: %.o: %.cpp
    cp $< $@

In my current working dir, I have a file called test_1.cpp.
Then when I type command

make -f Makefile2 test_1.o

It shows the command being executed is

g++ -c -o test_1.o test_1.cpp

This is a bit strange. It shall be that there is no such rule test_1.o. Is this some known issue for makefile?