emerge portage
Calculating dependencies... done!
>>> Verifying ebuild Manifests...

>>> Emerging (1 of 1) sys-apps/portage-2.1.3.19 to /
 * portage-2.1.3.16.tar.bz2 RMD160 ;-) ...                                                                                                                                       [ ok ]
 * portage-2.1.3.16.tar.bz2 SHA1 ;-) ...                                                                                                                                         [ ok ]
 * portage-2.1.3.16.tar.bz2 SHA256 ;-) ...                                                                                                                                       [ ok ]
 * portage-2.1.3.16.tar.bz2 size ;-) ...                                                                                                                                         [ ok ]
!!! Previously fetched file: 'portage-2.1.3.19.patch.bz2'
!!! Reason: Failed on RMD160 verification
!!! Got:      b7d64a13218486de01fe0ad8242a7ea258f0238a
!!! Expected: 3d33ecc8ae5176426666ba1aa03155a10ed97c01
Refetching... File renamed to '/usr/portage/distfiles/portage-2.1.3.19.patch.bz2._checksum_failure_.JmIF1d'

>>> Downloading 'http://mirror.utdlug.org/linux/distributions/gentoo/distfiles/portage-2.1.3.19.patch.bz2'
--06:36:13--  http://mirror.utdlug.org/linux/distributions/gentoo/distfiles/portage-2.1.3.19.patch.bz2
           => `/usr/portage/distfiles/portage-2.1.3.19.patch.bz2'
Resolving mirror.utdlug.org... 216.40.33.251, 216.40.33.31
Connecting to mirror.utdlug.org|216.40.33.251|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 653 [text/html]

100%[===========================================================================================================================================>] 653           --.--K/s

06:36:13 (32.81 MB/s) - `/usr/portage/distfiles/portage-2.1.3.19.patch.bz2' saved [653/653]

 * checking ebuild checksums ;-) ...                                                                                                                                             [ ok ]
 * checking auxfile checksums ;-) ...                                                                                                                                            [ ok ]
 * checking miscfile checksums ;-) ...                                                                                                                                           [ ok ]
 * checking portage-2.1.3.16.tar.bz2 ;-) ...                                                                                                                                     [ ok ]
 * checking portage-2.1.3.19.patch.bz2 ;-) ...                                                                                                                                   [ !! ]

!!! Digest verification failed:
!!! /usr/portage/distfiles/portage-2.1.3.19.patch.bz2
!!! Reason: Filesize does not match recorded size
!!! Got: 653
!!! Expected: 20196