$ git clone -n https://src.fedoraproject.org/rpms/python-dtopt.git /var/lib/mock/f45-build-30500-646/root/chroot_tmpdir/scmroot/python-dtopt
Cloning into '/var/lib/mock/f45-build-30500-646/root/chroot_tmpdir/scmroot/python-dtopt'...
$ git fetch origin 9f583640e0b836a418c568dfe176f2a2c86d6ebc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dtopt
 * [new ref]         9f583640e0b836a418c568dfe176f2a2c86d6ebc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f58364 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild