$ git clone -n https://src.fedoraproject.org/rpms/rust-test-generator.git /var/lib/mock/f38-build-side-43-rust-devel-1409849-31406/root/chroot_tmpdir/scmroot/rust-test-generator
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1409849-31406/root/chroot_tmpdir/scmroot/rust-test-generator'...
$ git fetch origin bf6d3fb1a2731a27a8ad425ad306d3bb0802499e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-test-generator
 * [new ref]         bf6d3fb1a2731a27a8ad425ad306d3bb0802499e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf6d3fb Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild