Git rename from index.lock to index failed

Looks like the following process had a lock on the .git\index file:

ssh-agent.exe
C:\Users\Tom\AppData\Local\GitHub\PortableGit_8810fd5c2c79c73adcc73fd0825f3b32fdb816e7\bin\ssh-agent.exe

I killed the process and ran git reset HEAD and looks like I’m back to normal now.