$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_sort.git /var/lib/mock/f42-build-3251840-41222/root/chroot_tmpdir/scmroot/rust-uu_sort
Cloning into '/var/lib/mock/f42-build-3251840-41222/root/chroot_tmpdir/scmroot/rust-uu_sort'...
$ git fetch origin b5663f795f8adf677b8f379438a169d661c14a6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_sort
 * [new ref]         b5663f795f8adf677b8f379438a169d661c14a6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5663f7 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild