$ git clone -n https://src.fedoraproject.org/rpms/R-xml2.git /var/lib/mock/f31-build-51014-27469/root/chroot_tmpdir/scmroot/R-xml2
Cloning into '/var/lib/mock/f31-build-51014-27469/root/chroot_tmpdir/scmroot/R-xml2'...
$ git reset --hard c59552a8b01e5b4b4efd31e0e9df331b0c29932d
HEAD is now at c59552a Fix failing test on new libxml2.