Restore functionality for early gits (#7775)

* Change tests to make it possible to run TestGit with 1.7.2

* Make merge run on 1.7.2

* Fix tracking and staging branch name problem

* Ensure that git 1.7.2 works on tests

* ensure that there is no chance for conflicts

* Fix-up missing merge issues

* Final rm

* Ensure LFS filters run on the tests

* Do not sign commits from temp repo

* Restore tracking fetch change

* Apply suggestions from code review

* Update modules/repofiles/temp_repo.go

2 files changed, 18 insertions, 6 deletions

diff --git a/modules/git/repo_branch.go b/modules/git/repo_branch.go
index 9209f4a764..3e1261d294 100644
--- a/modules/git/repo_branch.go
+++ b/modules/git/repo_branch.go
@@ -165,7 +165,7 @@ func (repo *Repository) AddRemote(name, url string, fetch bool) error {
 
 // RemoveRemote removes a remote from repository.
 func (repo *Repository) RemoveRemote(name string) error {
-	_, err := NewCommand("remote", "remove", name).RunInDir(repo.Path)
+	_, err := NewCommand("remote", "rm", name).RunInDir(repo.Path)
 	return err
 }
 
diff --git a/modules/git/repo_tree.go b/modules/git/repo_tree.go
index b31e4330cd..f5262ba81c 100644
--- a/modules/git/repo_tree.go
+++ b/modules/git/repo_tree.go
@@ -6,10 +6,13 @@
 package git
 
 import (
+	"bytes"
 	"fmt"
 	"os"
 	"strings"
 	"time"
+
+	"github.com/mcuadros/go-version"
 )
 
 func (repo *Repository) getTree(id SHA1) (*Tree, error) {
@@ -61,6 +64,11 @@ type CommitTreeOpts struct {
 
 // CommitTree creates a commit from a given tree id for the user with provided message
 func (repo *Repository) CommitTree(sig *Signature, tree *Tree, opts CommitTreeOpts) (SHA1, error) {
+	binVersion, err := BinVersion()
+	if err != nil {
+		return SHA1{}, err
+	}
+
 	commitTimeStr := time.Now().Format(time.RFC3339)
 
 	// Because this may call hooks we should pass in the environment
@@ -78,20 +86,24 @@ func (repo *Repository) CommitTree(sig *Signature, tree *Tree, opts CommitTreeOp
 		cmd.AddArguments("-p", parent)
 	}
 
-	cmd.AddArguments("-m", opts.Message)
+	messageBytes := new(bytes.Buffer)
+	_, _ = messageBytes.WriteString(opts.Message)
+	_, _ = messageBytes.WriteString("\n")
 
 	if opts.KeyID != "" {
 		cmd.AddArguments(fmt.Sprintf("-S%s", opts.KeyID))
 	}
 
-	if opts.NoGPGSign {
+	if version.Compare(binVersion, "2.0.0", ">=") && opts.NoGPGSign {
 		cmd.AddArguments("--no-gpg-sign")
 	}
 
-	res, err := cmd.RunInDirWithEnv(repo.Path, env)
+	stdout := new(bytes.Buffer)
+	stderr := new(bytes.Buffer)
+	err = cmd.RunInDirTimeoutEnvFullPipeline(env, -1, repo.Path, stdout, stderr, messageBytes)
 
 	if err != nil {
-		return SHA1{}, err
+		return SHA1{}, concatenateError(err, stderr.String())
 	}
-	return NewIDFromString(strings.TrimSpace(res))
+	return NewIDFromString(strings.TrimSpace(stdout.String()))
 }