How to checkout commit in GitKraken?

They finally implemented this feature yesterday (Sept. 25th, 2019).

Users can now enter a detached HEAD state by clicking the commit you wish to checkout and selecting Checkout this commit.

GitKraken (as of version 1.7) does not seem to offer a way to get into a detached HEAD mode, and check out a commit directly. Similarly, it will also not allow you to check out a tag (since that would also give you a detached HEAD).

So instead, you will have to create a (temporary) branch first which you can then check out.