$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_echo.git /var/lib/mock/f40-build-781159-131432/root/chroot_tmpdir/scmroot/rust-uu_echo
Cloning into '/var/lib/mock/f40-build-781159-131432/root/chroot_tmpdir/scmroot/rust-uu_echo'...
$ git fetch origin 4a1537243382a7df51288eefe17069d9dedf3584:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_echo
 * [new ref]         4a1537243382a7df51288eefe17069d9dedf3584 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a15372 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild