trying to build a kernel snap from a certain tag and branch results in the following error: Sorry, an error occurred in Snapcraft: Failed to pull source: cannot specify both 'source-branch' and 'source-tag' for a git source. See `snapcraft help sources` for more information. looking at "snapcraft help sources" does not explain that these two are mutually exlusive in any way: ... - source-branch: <branch-name> Snapcraft will checkout a specific branch from the source tree. This only works on multi-branch repositories from git and hg (mercurial). ... - source-tag: <tag> Snapcraft will checkout the specific tag from the source tree revision control system. ... they should either not be mutually exclusive (why are they at all) or there should be a proper hint in the help that one disables support for the other