Link a project to a repository or a team 

gh project link [<number>] [flag] [flags]

Options

--owner <string>
Login of the owner. Use "@me" for the current user.
-R , --repo <string>
The repository to be linked to this project
-T , --team <string>
The team to be linked to this project

Examples 

# link monalisa's project 1 to her repository "my_repo"

gh project 
link 
1 
--owner
 monalisa 
--repo
 my_repo

# link monalisa's organization's project 1 to her team "my_team"

gh project 
link 
1 
--owner
 my_organization 
--team
 my_team

# link monalisa's project 1 to the repository of current directory if neither --repo nor --team is specified

gh project 
link 
1

See also