$ git clone -n https://src.fedoraproject.org/rpms/R-httpuv.git /var/lib/mock/f31-build-77168-31479/root/chroot_tmpdir/scmroot/R-httpuv
Cloning into '/var/lib/mock/f31-build-77168-31479/root/chroot_tmpdir/scmroot/R-httpuv'...
$ git reset --hard e98f3fb4dbeaa5d2a4ce2dada5fa7ff27f4eb3ec
HEAD is now at e98f3fb - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild