$ git clone -n https://src.fedoraproject.org/rpms/shigofumi.git /var/lib/mock/f45-build-35922-700/root/chroot_tmpdir/scmroot/shigofumi
Cloning into '/var/lib/mock/f45-build-35922-700/root/chroot_tmpdir/scmroot/shigofumi'...
$ git fetch origin 13968bd580b8c17f70b4f725ffe0dac9b4dc4856:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shigofumi
 * [new ref]         13968bd580b8c17f70b4f725ffe0dac9b4dc4856 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13968bd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild