$ git clone -n https://src.fedoraproject.org/rpms/R-testthat.git /var/lib/mock/f31-build-114718-34468/root/chroot_tmpdir/scmroot/R-testthat
Cloning into '/var/lib/mock/f31-build-114718-34468/root/chroot_tmpdir/scmroot/R-testthat'...
$ git reset --hard d1106da4424a415e0aab1e7ad6f45dd5e40ce189
HEAD is now at d1106da 2.2.1