syz-ci: introduce gitArchive parameters

Some commits don't live long remotely.
It sometimes happens we need them later to:
1. Merge coverage.
2. Mention during communication.

3 files changed, 16 insertions, 0 deletions

diff --git a/pkg/vcs/fuchsia.go b/pkg/vcs/fuchsia.go
index 2ad0e1878..704c0a9e6 100644
--- a/pkg/vcs/fuchsia.go
+++ b/pkg/vcs/fuchsia.go
@@ -107,3 +107,7 @@ func (ctx *fuchsia) MergeBases(firstCommit, secondCommit string) ([]*Commit, err
 func (ctx *fuchsia) CommitExists(string) (bool, error) {
 	return false, fmt.Errorf("not implemented for fuchsia")
 }
+
+func (ctx *fuchsia) PushCommit(repo, commit string) error {
+	return ctx.repo.PushCommit(repo, commit)
+}
diff --git a/pkg/vcs/git.go b/pkg/vcs/git.go
index d1a91404c..f8362dfb2 100644
--- a/pkg/vcs/git.go
+++ b/pkg/vcs/git.go
@@ -635,3 +635,12 @@ func (git *git) CommitExists(commit string) (bool, error) {
 	}
 	return true, nil
 }
+
+func (git *git) PushCommit(repo, commit string) error {
+	tagName := "tag-" + commit // assign tag to guarantee remote persistence
+	git.git("tag", tagName)    // ignore errors on re-tagging
+	if _, err := git.git("push", repo, "tag", tagName); err != nil {
+		return fmt.Errorf("git push %s tag %s: %w", repo, tagName, err)
+	}
+	return nil
+}
diff --git a/pkg/vcs/vcs.go b/pkg/vcs/vcs.go
index 0730ba721..23a302cbd 100644
--- a/pkg/vcs/vcs.go
+++ b/pkg/vcs/vcs.go
@@ -72,6 +72,9 @@ type Repo interface {
 
 	// CommitExists check for the commit presence in local checkout.
 	CommitExists(commit string) (bool, error)
+
+	// PushCommit is used to store commit in remote repo.
+	PushCommit(repo, commit string) error
 }
 
 // Bisecter may be optionally implemented by Repo.