$ git clone -n https://gitee.com/fr4nk2/shim-unsigned-aarch64 /var/lib/mock/dist-an23-build-170616-58914/root/chroot_tmpdir/scmroot/shim-unsigned-aarch64
Cloning into '/var/lib/mock/dist-an23-build-170616-58914/root/chroot_tmpdir/scmroot/shim-unsigned-aarch64'...
$ git reset --hard 18bf5d31b5d7594e354ae14f94dde4f3cc469473
HEAD is now at 18bf5d3 update to 15.6