I frequently do the following little bit bothersome steps for opening
JIRA tickets when I watch a GitHub pull-request:
1. Select the "ARROW-XXXX" text in the title and copy it
2. Open JIRA if I haven't open it
3. Select a ticket to open it
4. Alter the URL by pasting text that copied at the step-1
5. Hit the enter key
I think it is better if these steps become easier.
We already have a mechanism to inject a GitHub pull-request URL into
the corresponding JIRA ticket. How about making the similar mechanism
for the reverse link? I guess it is possible to automate making a
comment of JIRA ticket URL to the pull-request when the "ARROW-XXXX"
text is injected in the title field by using GitHub Actions.