$ git clone -n https://src.fedoraproject.org/rpms/rust-num-rational.git /var/lib/mock/f38-build-side-43-rust-devel-1416799-31457/root/chroot_tmpdir/scmroot/rust-num-rational
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416799-31457/root/chroot_tmpdir/scmroot/rust-num-rational'...
$ git fetch origin 01d52b4957fc5bbf1eaac6a40d632e1829bfd928:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-num-rational
 * [new ref]         01d52b4957fc5bbf1eaac6a40d632e1829bfd928 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01d52b4 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild