the command block says that my head is alex but its not its far away from that

the command_block says that my head is alex but its not

What I expected to happen was.that i will have my own head
maybe you can fix this glich or bug

*What actually happened was.i got alex's head i i think about it and i trhow away the alex head

Steps to Reproduce:
1. an new version of minecraft maybe 1.8.5
2. .or just update my head from skinseed
3. .maybe i need an new skin