$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_sum.git /var/lib/mock/f40-build-781177-131442/root/chroot_tmpdir/scmroot/rust-uu_sum
Cloning into '/var/lib/mock/f40-build-781177-131442/root/chroot_tmpdir/scmroot/rust-uu_sum'...
$ git fetch origin afa184b43bb7af619afc2367519b179bc53f1571:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_sum
 * [new ref]         afa184b43bb7af619afc2367519b179bc53f1571 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at afa184b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild