Marketplace Branch/Tag Support

What: Marketplaces can now be installed from specific branches, tags, or commit refs instead of only the default branch.

How to use:

# Install from a specific branch
claude marketplace add owner/repo#develop

# Install from a tag
claude marketplace add owner/repo#v1.2.3

# Install from a commit hash
claude marketplace add [email protected]:owner/repo.git#abc123

Details:

• Use #ref syntax after the repository name or URL to specify a branch, tag, or commit
• Updates to existing marketplaces now respect the specified ref
• Git clone operations include the --branch flag when a ref is specified (Xd8() at line 264036, b5Q() at line 264043, Cd8() at line 264049)
• Git update operations fetch and checkout the specified ref (Bd8() at line 263476)
• Clone and update logging now shows which ref is being used
• Evidence: New functions Xd8() at line 264036, Bd8() at line 263476, b5Q() at line 264043, Cd8() at line 264049; marketplace parsing extracts ref from URLs at line 263078-263135