$ git clone -n https://src.fedoraproject.org/rpms/rust-xi-unicode.git /var/lib/mock/f45-build-46264-832/root/chroot_tmpdir/scmroot/rust-xi-unicode
Cloning into '/var/lib/mock/f45-build-46264-832/root/chroot_tmpdir/scmroot/rust-xi-unicode'...
$ git fetch origin a5be3bb05c24f12de463da17d2768b9b4cfb65bc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-xi-unicode
 * [new ref]         a5be3bb05c24f12de463da17d2768b9b4cfb65bc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5be3bb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild