lakeFS is an open-source data version control that transforms your object storage to Git-like repositories..

lakeFS

singleflight and cancellation: the net package just <https://github.com/golang/go/blob/7936efecc8981fab11b445d96cdb1480d9d8208b/src/net/lookup.go#L285-L290|cancels cancellation>:
```	// We don't want a cancellation of ctx to affect the
	// lookupGroup operation. Otherwise if our context gets
	// canceled it might cause an error to be returned to a lookup
	// using a completely different context. However we need to preserve
	// only the values in context. See Issue 28600.
	lookupGroupCtx, lookupGroupCancel := context.WithCancel(withUnexpiredValuesPreserved(ctx))```

<https://github.com/golang/go/issues/36503> for why general merging of context is really (_really_) tricky.