$ git clone -n https://src.fedoraproject.org/rpms/python-multilib.git /var/lib/mock/f45-build-31649-654/root/chroot_tmpdir/scmroot/python-multilib
Cloning into '/var/lib/mock/f45-build-31649-654/root/chroot_tmpdir/scmroot/python-multilib'...
$ git fetch origin 4d85814fcdb226bcea8dff5442429ce90bfc7cbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-multilib
 * [new ref]         4d85814fcdb226bcea8dff5442429ce90bfc7cbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d85814 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild