Run of unchanged for golang-github-json-iterator-go

Try this locally (using the package):

debcheckout golang-github-json-iterator-go
cd golang-github-json-iterator-go
just-build --revision=git-v1:cfbb621be072ed89a775453b6314543cc48fbe62
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  File "/home/janitor/.config/breezy/plugins/debian/upstream/pristinetar.py", line 881, in reconstruct_pristine_tar
    tree = self.branch.repository.revision_tree(revid)
  File "/home/janitor/debian-janitor/breezy/breezy/git/repository.py", line 547, in revision_tree
    return GitRevisionTree(self, revision_id)
  File "/home/janitor/debian-janitor/breezy/breezy/git/tree.py", line 328, in __init__
    raise errors.NoSuchRevision(repository, revision_id)
breezy.errors.NoSuchRevision: LocalGitRepository('file:///home/janitor/tmp/tmpczlr60je/golang-github-json-iterator-go/') has no revision b'git-v1:5c7215d2ea5ada9166cdba409aa2e8bc5d44dc9c'

brz 3.2.0dev on python 3.8.7rc1 (Linux-5.9.0-3-amd64-x86_64-with-glibc2.29)
arguments: ['/home/janitor/debian-janitor/breezy/breezy/__main__.py',
    'builddeb', '--guess-upstream-branch-url', '--builder=sbuild -A -v', '--
    result-dir=/home/janitor/tmp/tmpczlr60je']
plugins: bash_completion[3.2.0dev], changelog_merge[3.2.0dev],
    commitfromnews[3.2.0dev], cvs[3.2.0dev], darcs[3.2.0dev], debian[3.0.0],
    email[3.2.0dev], etckeeper[unknown], fastimport[3.2.0dev],

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