$ git clone -n https://src.fedoraproject.org/rpms/python-jsonstreams.git /var/lib/mock/f45-build-31240-651/root/chroot_tmpdir/scmroot/python-jsonstreams
Cloning into '/var/lib/mock/f45-build-31240-651/root/chroot_tmpdir/scmroot/python-jsonstreams'...
$ git fetch origin 055fcab0947ba48ae01b0ee248d6f4f03941ce82:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jsonstreams
 * [new ref]         055fcab0947ba48ae01b0ee248d6f4f03941ce82 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 055fcab Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild