How to remove the connection between jira and github and then set it up again

[Anjali Dahiya]

Not able to select the Git repository in the 

[Fabio Racobaldo _Herzum_]

Hi @Anjali Dahiya and welcome,

please take a look to the following useful guide https://support.atlassian.com/jira-cloud-administration/docs/integrate-with-github/

I don't kknow which steps have been executed so my suggestion is to follow guide step by step.

Hope this helps,

Fabio