$ git clone -n https://src.fedoraproject.org/rpms/R-xfun.git /var/lib/mock/f33-build-417686-62897/root/chroot_tmpdir/scmroot/R-xfun
Cloning into '/var/lib/mock/f33-build-417686-62897/root/chroot_tmpdir/scmroot/R-xfun'...
$ git reset --hard dd5c93a00f8fa6c3e8cbdd261538adfc5989ea13
HEAD is now at dd5c93a Update to latest version.