*** :-/ ***
➜ performance git:(develop) ✗ git rev-parse HEAD
1f06a79fd6ee189a3d935201b77cbaf10fc511a7
➜ performance git:(develop) ✗ git pull upstream develop
From https://github.com/ethereum/cpp-ethereum
* branch develop -> FETCH_HEAD
Already up-to-date.
➜ performance git:(develop) ✗ git rev-parse HEAD