Use refname:strip-2 instead of refname:short when syncing tags (#28797) (#28811)

Backport #28797 by @lunny

Fix #28694 

Generally, `refname:short` should be equal to `refname:lstrip=2` except
`core.warnAmbiguousRefs is used to select the strict abbreviation mode.`

ref:
https://git-scm.com/docs/git-for-each-ref#Documentation/git-for-each-ref.txt-refname

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

modules/git/foreachref/format_test.go

@@ -49,9 +49,9 @@ func TestFormat_Flag(t *testing.T) {
 		{
 			name: "multiple fields",
 
-			givenFormat: foreachref.NewFormat("refname:short", "objecttype", "objectname"),
+			givenFormat: foreachref.NewFormat("refname:lstrip=2", "objecttype", "objectname"),
 
-			wantFlag: "refname:short %(refname:short)%00objecttype %(objecttype)%00objectname %(objectname)%00%00",
+			wantFlag: "refname:lstrip=2 %(refname:lstrip=2)%00objecttype %(objecttype)%00objectname %(objectname)%00%00",
 		},
 	}
 

modules/git/repo_tag.go

@@ -112,7 +112,9 @@ func (repo *Repository) GetTagWithID(idStr, name string) (*Tag, error) {
 
 // GetTagInfos returns all tag infos of the repository.
 func (repo *Repository) GetTagInfos(page, pageSize int) ([]*Tag, int, error) {
-	forEachRefFmt := foreachref.NewFormat("objecttype", "refname:short", "object", "objectname", "creator", "contents", "contents:signature")
+	// Generally, refname:short should be equal to refname:lstrip=2 except core.warnAmbiguousRefs is used to select the strict abbreviation mode.
+	// https://git-scm.com/docs/git-for-each-ref#Documentation/git-for-each-ref.txt-refname
+	forEachRefFmt := foreachref.NewFormat("objecttype", "refname:lstrip=2", "object", "objectname", "creator", "contents", "contents:signature")
 
 	stdoutReader, stdoutWriter := io.Pipe()
 	defer stdoutReader.Close()
@@ -162,7 +164,7 @@ func (repo *Repository) GetTagInfos(page, pageSize int) ([]*Tag, int, error) {
 func parseTagRef(ref map[string]string) (tag *Tag, err error) {
 	tag = &Tag{
 		Type: ref["objecttype"],
-		Name: ref["refname:short"],
+		Name: ref["refname:lstrip=2"],
 	}
 
 	tag.ID, err = NewIDFromString(ref["objectname"])

modules/git/repo_tag_test.go

@@ -209,8 +209,8 @@ func TestRepository_parseTagRef(t *testing.T) {
 			name: "lightweight tag",
 
 			givenRef: map[string]string{
-				"objecttype":    "commit",
-				"refname:short": "v1.9.1",
+				"objecttype":       "commit",
+				"refname:lstrip=2": "v1.9.1",
 				// object will be empty for lightweight tags
 				"object":     "",
 				"objectname": "ab23e4b7f4cd0caafe0174c0e7ef6d651ba72889",
@@ -238,8 +238,8 @@ func TestRepository_parseTagRef(t *testing.T) {
 			name: "annotated tag",
 
 			givenRef: map[string]string{
-				"objecttype":    "tag",
-				"refname:short": "v0.0.1",
+				"objecttype":       "tag",
+				"refname:lstrip=2": "v0.0.1",
 				// object will refer to commit hash for annotated tag
 				"object":     "3325fd8a973321fd59455492976c042dde3fd1ca",
 				"objectname": "8c68a1f06fc59c655b7e3905b159d761e91c53c9",
@@ -267,11 +267,11 @@ func TestRepository_parseTagRef(t *testing.T) {
 			name: "annotated tag with signature",
 
 			givenRef: map[string]string{
-				"objecttype":    "tag",
-				"refname:short": "v0.0.1",
-				"object":        "3325fd8a973321fd59455492976c042dde3fd1ca",
-				"objectname":    "8c68a1f06fc59c655b7e3905b159d761e91c53c9",
-				"creator":       "Foo Bar <foo@bar.com> 1565789218 +0300",
+				"objecttype":       "tag",
+				"refname:lstrip=2": "v0.0.1",
+				"object":           "3325fd8a973321fd59455492976c042dde3fd1ca",
+				"objectname":       "8c68a1f06fc59c655b7e3905b159d761e91c53c9",
+				"creator":          "Foo Bar <foo@bar.com> 1565789218 +0300",
 				"contents": `Add changelog of v1.9.1 (#7859)
 
 * add changelog of v1.9.1