From: Marc Becker <becm@gmx.de>

Queries for commits created during the same 'git fast-import' session
result in a crash:
    < reset refs/heads/newbranch
    < from <new-commit-oid>
    > fatal: not a valid commit: <new-commit-oid>

Getting file content for commit has no issue (working implementation):
    < ls <new-commit-oid> file-in-new-commit.txt
    > {file content}

During import, new objects may not (yet) be reachable via the ODB layer.
Try to resolve requested tag/commit via object cache first
to avoid crash.
Add test to 't/t9300.sh' with references to a pending tag and commit.

Signed-off-by: Marc Becker <becm@gmx.de>

Submitted-As: https://lore.kernel.org/git/pull.2252.v2.git.1791845420568.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.2252.git.1791653078449.gitgitgadget@gmail.com