Merge branch 'ro/mktree-allow-missing-fix' into maint

"git mktree --missing" lazily fetched objects that are missing from the local object store, which was totally unnecessary for the purpose of creating the tree object(s) from its input. source: <748f39a9-65aa-2110-cf92-7ddf81b5f507@roku.com> * ro/mktree-allow-missing-fix: mktree: do not check type of remote objects