bug#35561: Fresh install, guix pull exits with error, hash mismatch

[Calle Kabo]

address@hidden ~$ guix pull
Migrating profile generations to '/var/guix/profiles/per-user/manager'...
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
downloading from https://ci.guix.gnu.org/nar/gzip/1drx7dy1zakc0xs60nb0im1jbvxp11dj-isrgrootx1.pem...
 isrgrootx1.pem  2KiB                                                                             634KiB/s 00:00 [##################] 100.0%

downloading from https://ci.guix.gnu.org/nar/gzip/zh3s89l1kri7r5ya0bmhil65lm0my691-module-import...
 module-import  187B                                                                               81KiB/s 00:00 [##################] 100.0%

downloading from https://ci.guix.gnu.org/nar/gzip/yl1vi61qmvvh83amwiwaik7s7jc03n5z-openssl-1.0.2p...
 openssl-1.0.2p  2.2MiB                                                                           2.3MiB/s 00:01 [##################] 100.0%

downloading from https://ci.guix.gnu.org/nar/gzip/lz72i155jfq364n97qgd6f2rj02mm7y1-module-import-compiled...
 module-import-compiled  45KiB                                                                    757KiB/s 00:00 [##################] 100.0%

building /gnu/store/vf1ni4bdwlya3f5ii7wq6agiwdvzapmw-letsencryptauthorityx3.pem.drv...
downloading from https://letsencrypt.org/certs/letsencryptauthorityx3.pem...
|sha256 hash mismatch for /gnu/store/bcq7sqhg18b7b1q87j8z60d5hybsdafm-letsencryptauthorityx3.pem:
  expected hash: 0zbamj6c7zqw1j9mbqygc8k1ykgj6xiisp9svmlif5lkbnyjhnkk
  actual hash:   1kvac1dhm1d02bhrfj6l1cz1dpldz6ishb78zzvy8245zgvh7pdn
hash mismatch for store item '/gnu/store/bcq7sqhg18b7b1q87j8z60d5hybsdafm-letsencryptauthorityx3.pem'
build of /gnu/store/vf1ni4bdwlya3f5ii7wq6agiwdvzapmw-letsencryptauthorityx3.pem.drv failed
View build log at '/var/log/guix/drvs/vf/1ni4bdwlya3f5ii7wq6agiwdvzapmw-letsencryptauthorityx3.pem.drv.bz2'.
cannot build derivation `/gnu/store/paq8cw9f06lxw34aakk0vg1b9nx21cqf-le-certs-0.drv': 1 dependencies couldn't be built
guix pull: error: build of `/gnu/store/paq8cw9f06lxw34aakk0vg1b9nx21cqf-le-certs-0.drv' failed

I downloaded the expected file with 'guix download' from another source and tried 'guix pull' again. Then it failed on hash mismatch for letsencryptauthorityx4.pem instead.