Dear Maintainer,

ezgb reads git-bug repositories directly through pygit2, but every
write operation (creating bugs, adding comments, changing labels or
status, creating or adopting identities) runs the git-bug
command-line tool as "git -C <repo> bug ...". See git_bug_cli() in
ezgb/_git.py.

git-bug isn't packaged in Debian yet (RFP #910108), so writes fail
with git's "'bug' is not a git command" error. Reads still work.

Once git-bug is in the archive, python3-ezgb should depend on it
and this bug can be closed.