When a git-sourced recipe's source/ directory exists but has no
embedded .git (e.g., a cleanup pass removed .git directories from
build-cache sources, or the dir was extracted from an archive without
.git), the cookbook previously hard-bailed with
'{:?} is not a git repository, but recipe indicated git source'
This required manual intervention: the operator had to find the
broken source/ dir, rm -rf it, and re-run the build. With many
local recipes that use git URLs and embedded .git directories as
build caches (e.g., local/recipes/dev/ninja-build, local/recipes/kde/*),
this happened easily.
Fix: detect the missing .git, wipe the source dir, and re-clone from
the recipe's git URL. The fresh-clone logic is extracted to a new
reclone_git_source() helper used by both the initial-fetch path and
the self-heal path. After the self-heal, the source/ has a valid
.git and the rest of the fetch flow continues normally.
Tested by: deleting local/recipes/dev/ninja-build/source/.git (the
exact regression that triggered this fix) and running
./local/scripts/build-redbear.sh --upstream redbear-mini
which now self-heals instead of hard-failing.
vasilito
32a776771c