I started getting Could not read from remote repository error recently when working with my github repository. My specs:
- IntelliJ IDEA 2017.3.4 (Ultimate Edition)
- Settings -> Version Control -> Git -> SSH executable -> Built-In
- Fedora Linux
Of course those problems occurred only when trying to push/pull/fetch etc. from IDE - executing same commands from command line worked like a charm.
Solution that worked for me
I didn't want to switch from Built-In SSH executable to Native, mostly because my native SSH client asks me for the password anytime I try to sync with remote repository.
I solved this problem by switching from SSH remote URL to HTTPS URL. According to this GitHub help page - it is recommended to use HTTPS URL instead of SSH one.
Changing remote URL from SSH to HTTPS
In IntelliJ IDEA go to VCS -> Git -> Remotes..., select row containing "origin" and click on edit button. If you host your repository on GitHub, replace your SSH URL from:
git@github.com:USERNAME/REPOSITORY.git
to:
https://github.com/USERNAME/REPOSITORY.git
You can also get your HTTPS URL from your GitHub repository home page - click on "Clone or download" button and click on "Use HTTPS" link to display your repository's HTTPS URL:
UPDATE 2018-03-13
JetBrains just released IntelliJ IDEA 2017.3.5 that includes fix for SSH access to GitHub - https://blog.jetbrains.com/idea/2018/03/intellij-idea-2017-3-5-fix-for-ssh-access-to-github/