The show lldp table command output on Spine1 confirms interfaces Eth1/1-1/8 are connected to the eight leaf switches in the fabric.
Spine1# show lldp table
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LocalPort RemoteDevice RemotePortID RemotePortDescr
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Eth1/1 Leaf1A Eth1/53 To Spine1
Eth1/2 Leaf1B Eth1/53 To Spine1
Eth1/3 Leaf2A Eth1/53 To Spine1
Eth1/4 Leaf2B Eth1/53 To Spine1
Eth1/5 Leaf3A Eth1/53 To Spine1
Eth1/6 Leaf3B Eth1/53 To Spine1
Eth1/7 Leaf4A Eth1/53 To Spine1
Eth1/8 Leaf4B Eth1/53 To Spine1