$ git clone -n https://src.fedoraproject.org/rpms/R-tibble.git /var/lib/mock/f33-build-449602-63391/root/chroot_tmpdir/scmroot/R-tibble
Cloning into '/var/lib/mock/f33-build-449602-63391/root/chroot_tmpdir/scmroot/R-tibble'...
$ git reset --hard f27f4dac2027d54585045165137847bf8e5c5052
HEAD is now at f27f4da Disable bootstrap build.