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resolve external references when cloning a remote delta enabled repo. #111

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resolve external references when cloning a remote delta enabled repo. #111

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11 changes: 11 additions & 0 deletions plumbing/format/packfile/parser.go
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Expand Up @@ -287,6 +287,7 @@ func (p *Parser) resolveDeltas() error {
if err := p.resolveObject(stdioutil.Discard, child, content); err != nil {
return err
}
p.resolveExternalRef(child)
}

// Remove the delta from the cache.
Expand All @@ -299,6 +300,16 @@ func (p *Parser) resolveDeltas() error {
return nil
}

func (p *Parser) resolveExternalRef(o *objectInfo) {
if ref, ok := p.oiByHash[o.SHA1]; ok && ref.ExternalRef {
p.oiByHash[o.SHA1] = o
o.Children = ref.Children
for _, c := range o.Children {
c.Parent = o
}
}
}

func (p *Parser) get(o *objectInfo, buf *bytes.Buffer) (err error) {
if !o.ExternalRef { // skip cache check for placeholder parents
b, ok := p.cache.Get(o.Offset)
Expand Down