supply libgit with flag to respect env variables.

try fixing #2298

Author: extrawurst

asyncgit/src/sync/repository.rs

@@ -51,7 +51,7 @@ impl From<&str> for RepoPath {
 pub fn repo(repo_path: &RepoPath) -> Result<Repository> {
 	let repo = Repository::open_ext(
 		repo_path.gitpath(),
-		RepositoryOpenFlags::empty(),
+		RepositoryOpenFlags::FROM_ENV,
 		Vec::<&Path>::new(),
 	)?;
 

asyncgit/src/sync/submodules.rs

@@ -123,7 +123,7 @@ pub fn submodule_parent_info(
 
 		if let Ok(parent) = Repository::open_ext(
 			parent_path,
-			RepositoryOpenFlags::empty(),
+			RepositoryOpenFlags::FROM_ENV,
 			Vec::<&Path>::new(),
 		) {
 			let parent_wd = work_dir(&parent)?.to_path_buf();

asyncgit/src/sync/utils.rs

@@ -28,7 +28,7 @@ pub struct Head {
 pub fn repo_open_error(repo_path: &RepoPath) -> Option<String> {
 	Repository::open_ext(
 		repo_path.gitpath(),
-		RepositoryOpenFlags::empty(),
+		RepositoryOpenFlags::FROM_ENV,
 		Vec::<&Path>::new(),
 	)
 	.map_or_else(|e| Some(e.to_string()), |_| None)