arch4221.sh: add shallow fetch, use newer dasharo/coreboot commit

Michał Iwanickirequested to merge
fix-build into arch4221
  • Mirror stopped working and even before that there were problems
  • shallow fetch - coreboot repository takes up 1 GB less space. It's also possible to gain another 600-700 MB on dasharo-sdk but it's checked out by build.sh script in dasharo/coreboot so we would need to clone exactly the same commit
  • Changed branches to commits as branches might get deleted - as happened with couple
  • Changed dasharo/corebootcommit to https://github.com/Dasharo/coreboot/pull/607 to fix failing odroid_h4 build because of missing repository
Edited by Michał Iwanicki

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