Fetching/importing a single commit

[9999years]

I'd like to fetch a single commit from a Git remote and import it into my jj repository. Right now, this doesn't work because no refs point to the commit:

$ git fetch mercury-github 2e728e9baa24041fee553126728aa89130f0be63
...
 * branch              2e728e9baa24041fee553126728aa89130f0be63 -> FETCH_HEAD
$ jj show 2e728e9baa24041fee553126728aa89130f0be63
Error: Revision `2e728e9baa24041fee553126728aa89130f0be63` doesn't exist

I can work around this by doing something like:

$ git branch tmp FETCH_HEAD
$ jj duplicate -r tmp -d ...
$ jj bookmark forget tmp

But it feels pretty clumsy. It would be nice if I could do jj git import 2e728e9baa24041fee553126728aa89130f0be63 or jj git import FETCH_HEAD directly.

[yuja]

It's tracked by #4388.

You can do git checkout 2e728e9baa24041fee553126728aa89130f0be63 to import the HEAD branch, btw.

[PhilipMetzger]

Something similar was asked for here #7253 by @lf-