Gitparse message fix (#1125)

* Fix messages being reused

* Add comment about change.

go.mod

@@ -49,7 +49,7 @@ require (
 	github.com/sergi/go-diff v1.3.1
 	github.com/stretchr/testify v1.8.1
 	github.com/tailscale/depaware v0.0.0-20210622194025-720c4b409502
-	github.com/xanzy/go-gitlab v0.78.0
+	github.com/xanzy/go-gitlab v0.80.2
 	go.mongodb.org/mongo-driver v1.11.2
 	go.uber.org/zap v1.24.0
 	golang.org/x/crypto v0.6.0

go.sum

@@ -333,8 +333,8 @@ github.com/trufflesecurity/overseer v1.1.7-custom5/go.mod h1:nT9w37AiO1Nop2VhVhN
 github.com/ulikunitz/xz v0.5.6/go.mod h1:2bypXElzHzzJZwzH67Y6wb67pO62Rzfn7BSiF4ABRW8=
 github.com/ulikunitz/xz v0.5.10 h1:t92gobL9l3HE202wg3rlk19F6X+JOxl9BBrCCMYEYd8=
 github.com/ulikunitz/xz v0.5.10/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
-github.com/xanzy/go-gitlab v0.78.0 h1:8jUHfQVAprG04Av5g0PxVd3CNsZ5hCbojIax7Hba1mE=
-github.com/xanzy/go-gitlab v0.78.0/go.mod h1:DlByVTSXhPsJMYL6+cm8e8fTJjeBmhrXdC/yvkKKt6M=
+github.com/xanzy/go-gitlab v0.80.2 h1:CH1Q7NDklqZllox4ICVF4PwlhQGfPtE+w08Jsb74ZX0=
+github.com/xanzy/go-gitlab v0.80.2/go.mod h1:DlByVTSXhPsJMYL6+cm8e8fTJjeBmhrXdC/yvkKKt6M=
 github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM=
 github.com/xanzy/ssh-agent v0.3.3/go.mod h1:6dzNDKs0J9rVPHPhaGCukekBHKqfl+L3KghI1Bc68Uw=
 github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=

pkg/gitparse/gitparse.go

@@ -241,14 +241,17 @@ func (c *Parser) fromReader(ctx context.Context, stdOut io.Reader, commitChan ch
 					totalSize += diff.Content.Len()
 				}
 				if totalSize > c.maxCommitSize {
+					oldCommit := currentCommit
 					commitChan <- *currentCommit
 					currentCommit = &Commit{
 						Hash:    currentCommit.Hash,
 						Author:  currentCommit.Author,
 						Date:    currentCommit.Date,
-						Message: currentCommit.Message,
+						Message: strings.Builder{},
 						Diffs:   []Diff{},
 					}
+					// Message needs to be recreated here otherwise writing to it again will result in a panic.
+					currentCommit.Message.WriteString(oldCommit.Message.String())
 				}
 			}
 			currentDiff = &Diff{}