$ git clone -n https://src.fedoraproject.org/rpms/rust-unic-normal.git /var/lib/mock/f45-build-45878-828/root/chroot_tmpdir/scmroot/rust-unic-normal
Cloning into '/var/lib/mock/f45-build-45878-828/root/chroot_tmpdir/scmroot/rust-unic-normal'...
$ git fetch origin 4f00cbdf68eba01345ac7acfc04882e54df013e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unic-normal
 * [new ref]         4f00cbdf68eba01345ac7acfc04882e54df013e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f00cbd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild