$ git clone -n https://src.fedoraproject.org/rpms/rust-mbox.git /var/lib/mock/f38-build-side-43-rust-devel-1412137-31438/root/chroot_tmpdir/scmroot/rust-mbox
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1412137-31438/root/chroot_tmpdir/scmroot/rust-mbox'...
$ git fetch origin fb24188aed19286c0058679aacdf609f944e1936:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-mbox
 * [new ref]         fb24188aed19286c0058679aacdf609f944e1936 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb24188 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild