$ git clone -n https://src.fedoraproject.org/rpms/libguestfs.git /var/lib/mock/f31-build-69121-30281/root/chroot_tmpdir/scmroot/libguestfs
Cloning into '/var/lib/mock/f31-build-69121-30281/root/chroot_tmpdir/scmroot/libguestfs'...
$ git reset --hard 22b8a21feb7bf866a1fb0ff7b696ccb0626f9d20
HEAD is now at 22b8a21 Disable the package entirely on i686 because there is no kernel https://fedoraproject.org/wiki/Changes/Stop_Building_i686_Kernels