$ git clone -n https://src.fedoraproject.org/rpms/python-bluepyopt.git /var/lib/mock/f40-build-783056-132631/root/chroot_tmpdir/scmroot/python-bluepyopt
Cloning into '/var/lib/mock/f40-build-783056-132631/root/chroot_tmpdir/scmroot/python-bluepyopt'...
$ git fetch origin 55865922221b1d9f9fd562b84507ca391c7fc81c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-bluepyopt
 * [new ref]         55865922221b1d9f9fd562b84507ca391c7fc81c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5586592 Update to 1.14.10 (RHBZ#2257632)