/tmp/foo (master|MERGING)$ git stash
a: needs merge
a: needs merge
a: unmerged (fe0ca48c8500ee0fd0256b30810c9d8e6126f12b)
a: unmerged (8b04cff197f210e79df785fcc37c7784d9a47506)
a: unmerged (dcadcdc7846a2c35bf27ea269ccf3d2abda76d43)
fatal: git-write-tree: error building trees
Cannot save the current index state
/tmp/foo (master|MERGING)$ git checkout -b foo
a: needs merge
error: you need to resolve your current index first