$ git clone -n https://src.fedoraproject.org/rpms/python-smart_open.git /var/lib/mock/f42-build-60920349-6585844/root/chroot_tmpdir/scmroot/python-smart_open
Cloning into '/var/lib/mock/f42-build-60920349-6585844/root/chroot_tmpdir/scmroot/python-smart_open'...
$ git fetch origin 084e5492663c431cde7b27ff67496c991d884f75:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-smart_open
 * [new ref]         084e5492663c431cde7b27ff67496c991d884f75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 084e549 Fix Python version metadata