Checksum error An error occurred while updating the package checksum.
git: could not find requested reference
reference: head
repo: dedbox/racket-viz.git
context...:
/home/pkgserver/racket/collects/net/git-checkout.rkt:405:0: select-commits
/home/pkgserver/racket/collects/net/git-checkout.rkt:74:8
/home/pkgserver/racket/collects/net/git-checkout.rkt:55:2: retry-loop
/home/pkgserver/pkg-index/official/update.rkt:31:2
/home/pkgserver/racket/collects/racket/private/list.rkt:263:2: filter
/home/pkgserver/pkg-index/official/update.rkt:174:0: do-update!
/home/pkgserver/pkg-index/official/common.rkt:148:0: run!
/home/pkgserver/pkg-index/official/update.rkt:185:0: run-update!
