$ git clone -n https://src.fedoraproject.org/rpms/python-dateutil.git /var/lib/mock/f45-build-30238-643/root/chroot_tmpdir/scmroot/python-dateutil
Cloning into '/var/lib/mock/f45-build-30238-643/root/chroot_tmpdir/scmroot/python-dateutil'...
$ git fetch origin 8f5f4fdd72537ab06b8a141336767df2f613c06d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dateutil
 * [new ref]         8f5f4fdd72537ab06b8a141336767df2f613c06d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f5f4fd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild