$ git clone -n https://github.com/xcp-ng-rpms/vendor-update-keys.git /var/lib/mock/v8.3-base-4086-3978/root/chroot_tmpdir/scmroot/vendor-update-keys
Cloning into '/var/lib/mock/v8.3-base-4086-3978/root/chroot_tmpdir/scmroot/vendor-update-keys'...
$ git reset --hard e7bb89c17d29d3ebf6c807d9cafd83dd45da5734
HEAD is now at e7bb89c Rebuild for XCP-ng 8.3 alpha