Current ebuild sources twitter-twemoji-fonts-13.0.1-1.fc33.noarch.rpm but the fedora repos only have twitter-twemoji-fonts-13.0.1-2.fc33.noarch.rpm, resulting in a failed download.
$ sudo emerge twemoji
Calculating dependencies... done!
>>> Verifying ebuild manifests
>>> Emerging (1 of 1) media-fonts/twemoji-13.0.1::jorgicio
>>> Downloading 'https://archives.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/t/twitter-twemoji-fonts-13.0.1-1.fc33.noarch.rpm'
--2020-08-22 12:43:42-- https://archives.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/t/twitter-twemoji-fonts-13.0.1-1.fc33.noarch.rpm
Resolving archives.fedoraproject.org... 38.145.60.22, 38.145.60.23, 38.145.60.24
Connecting to archives.fedoraproject.org|38.145.60.22|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
2020-08-22 12:43:44 ERROR 404: Not Found.
!!! Couldn't download 'twitter-twemoji-fonts-13.0.1-1.fc33.noarch.rpm'. Aborting.
* Fetch failed for 'media-fonts/twemoji-13.0.1', Log file:
* '/var/tmp/portage/media-fonts/twemoji-13.0.1/temp/build.log'
>>> Failed to emerge media-fonts/twemoji-13.0.1, Log file:
>>> '/var/tmp/portage/media-fonts/twemoji-13.0.1/temp/build.log'
* Messages for package media-fonts/twemoji-13.0.1:
* Fetch failed for 'media-fonts/twemoji-13.0.1', Log file:
* '/var/tmp/portage/media-fonts/twemoji-13.0.1/temp/build.log'
Current ebuild sources twitter-twemoji-fonts-13.0.1-1.fc33.noarch.rpm but the fedora repos only have twitter-twemoji-fonts-13.0.1-2.fc33.noarch.rpm, resulting in a failed download.