$ git clone -n https://src.fedoraproject.org/rpms/R-rgeos.git /var/lib/mock/f31-build-50567-27412/root/chroot_tmpdir/scmroot/R-rgeos
Cloning into '/var/lib/mock/f31-build-50567-27412/root/chroot_tmpdir/scmroot/R-rgeos'...
$ git reset --hard ff46883ccae0ee7f9c6823d6790039a422ddf2bc
HEAD is now at ff46883 Update to latest version.