$ git clone -n https://src.fedoraproject.org/rpms/rust-simd_helpers.git /var/lib/mock/f39-build-1489009-34501/root/chroot_tmpdir/scmroot/rust-simd_helpers
Cloning into '/var/lib/mock/f39-build-1489009-34501/root/chroot_tmpdir/scmroot/rust-simd_helpers'...
$ git fetch origin e1da83ccdd65be08315b7e05a0fa7615c0a2e20b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-simd_helpers
 * [new ref]         e1da83ccdd65be08315b7e05a0fa7615c0a2e20b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e1da83c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild