$ git clone -n https://src.fedoraproject.org/rpms/python-bluepyopt.git /var/lib/mock/f40-build-2726639-73124/root/chroot_tmpdir/scmroot/python-bluepyopt
Cloning into '/var/lib/mock/f40-build-2726639-73124/root/chroot_tmpdir/scmroot/python-bluepyopt'...
$ git fetch origin e98ddf64eafb4f3a84d549a6d9be0a790ca83455:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-bluepyopt
 * [new ref]         e98ddf64eafb4f3a84d549a6d9be0a790ca83455 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e98ddf6 Update to 1.14.11 (RHBZ#2271369)