$ git clone -n https://src.fedoraproject.org/rpms/shim-unsigned-x64.git /var/lib/mock/f38-build-side-42-init-devel-488430-24628/root/chroot_tmpdir/scmroot/shim-unsigned-x64
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-488430-24628/root/chroot_tmpdir/scmroot/shim-unsigned-x64'...
$ git reset --hard 5d3ab28756291a725d309da8f595de4a6ac8da7a
HEAD is now at 5d3ab28 Update to shim-15.6