$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.2-testing-2943-2453/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.2-testing-2943-2453/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 1587e98490c7894eed3914415e5dd83f4cbcb34c
fatal: Could not parse object '1587e98490c7894eed3914415e5dd83f4cbcb34c'.