$ git clone -n https://src.fedoraproject.org/rpms/rust-derive_arbitrary0.4.git /var/lib/mock/f38-build-side-43-rust-devel-1414994-31454/root/chroot_tmpdir/scmroot/rust-derive_arbitrary0.4
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1414994-31454/root/chroot_tmpdir/scmroot/rust-derive_arbitrary0.4'...
$ git fetch origin aaf085455f179472c4cd24aa5d13bac8acf2dfda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-derive_arbitrary0.4
 * [new ref]         aaf085455f179472c4cd24aa5d13bac8acf2dfda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aaf0854 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild