Reject existing ref names in create_branch and create_tag - #4319

Reject existing ref names in create_branch and create_tag#4319

Fokko merged 2 commits into

apache:mainapache/iceberg-python:mainfrom

deepdave98:manage-snapshots-ref-guardsdeepdave98/iceberg-python:manage-snapshots-ref-guardsCopy head branch name to clipboard