# Git Shallow Clone Fixes

Two patterns encountered during Forgejo migration when local clones were shallow and source remote was unreachable.

## Pattern 1: Unshallow via HTTPS

When `git fetch --unshallow` over SSH hangs/times out (large repos, slow remote), switch to HTTPS temporarily:

```sh
git remote set-url origin https://codeberg.org/Owner/Repo.git
git fetch --unshallow origin
git remote set-url origin git@codeberg.org:Owner/Repo.git  # restore SSH
```

## Pattern 2: Make first commit rootless (missing parent)

When `.git/shallow` lists a boundary commit whose parent doesn't exist locally, and the source remote is unreachable:

```sh
# Check what's shallow — if only ONE line, this works
cat .git/shallow

# Create graft making the shallow boundary a root commit
echo "<shallow-hash> " > .git/info/grafts

# Rewrite history to make it permanent
FILTER_BRANCH_SQUELCH_WARNING=1 git filter-branch -f --msg-filter "cat" -- --all

# Clean up
rm .git/info/grafts .git/shallow
```

**Warning**: This rewrites all commit hashes. Only use when pushing to a fresh empty repo and no one depends on the old hashes. The repo should be small enough that filter-branch completes fast.