$ git clone -n https://github.com/xcp-ng-rpms/vendor-drivers.git /var/lib/mock/v8.1-base-1939-1308/root/chroot_tmpdir/scmroot/vendor-drivers
Cloning into '/var/lib/mock/v8.1-base-1939-1308/root/chroot_tmpdir/scmroot/vendor-drivers'...
$ git reset --hard 29aeb669b5f4c789950cfb3c761d453c9f4e7fd7
HEAD is now at 29aeb66 Import vendor-drivers-1.0.1-1.el7.centos.src.rpm