$ git clone -n https://src.fedoraproject.org/rpms/python-isodate.git /var/lib/mock/f45-build-31150-650/root/chroot_tmpdir/scmroot/python-isodate
Cloning into '/var/lib/mock/f45-build-31150-650/root/chroot_tmpdir/scmroot/python-isodate'...
$ git fetch origin 6ed559fd66d07548d8d6a3ec480c63a2472a3739:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-isodate
 * [new ref]         6ed559fd66d07548d8d6a3ec480c63a2472a3739 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ed559f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild