$ git clone -n https://src.fedoraproject.org/rpms/rust-difference.git /var/lib/mock/f38-build-side-42-init-devel-1395619-31050/root/chroot_tmpdir/scmroot/rust-difference
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1395619-31050/root/chroot_tmpdir/scmroot/rust-difference'...
$ git fetch origin ccfbb8e50b678e6c9970843871c1df440e65dc03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-difference
 * [new ref]         ccfbb8e50b678e6c9970843871c1df440e65dc03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccfbb8e Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild