With the most recent pygit2 module, saltstack fails to use any gitfs ressources.
The patch is already present upstream (at least for 2018.3, but I need it for 2019.2), please include it into the port until then:
The mentioned patch  worked and fixed my problem as described in the issue referenced from the pull request .
Root cause is in pygit2 0.27.4 according to .
(for having the patch from  working, you need to do meta things:
* remove mail-header etc, remove first 12 lines
* and remove a/ and b/ from the resulting line 1 and 2)
Thanks for the report, and sorry no-one acted on it until now. It looks like this is now overcome by events.
Closing this bug, as this patch was introduced upstream in salt v2019.2.1.
The ports tree was updated in October 2019 to introduce salt v2019.2.2.