Add Repository::fetchhead_to_annotated_commit (#524)

Author: andrewhickman

libgit2-sys/lib.rs

@@ -2828,6 +2828,13 @@ extern "C" {
         repo: *mut git_repository,
         reference: *const git_reference,
     ) -> c_int;
+    pub fn git_annotated_commit_from_fetchhead(
+        out: *mut *mut git_annotated_commit,
+        repo: *mut git_repository,
+        branch_name: *const c_char,
+        remote_url: *const c_char,
+        oid: *const git_oid,
+    ) -> c_int;
     pub fn git_annotated_commit_free(commit: *mut git_annotated_commit);
     pub fn git_merge_init_options(opts: *mut git_merge_options, version: c_uint) -> c_int;
     pub fn git_merge(

src/repo.rs

@@ -1442,6 +1442,29 @@ impl Repository {
         }
     }
 
+    /// Creates a git_annotated_commit from FETCH_HEAD.
+    pub fn annotated_commit_from_fetchhead(
+        &self,
+        branch_name: &str,
+        remote_url: &str,
+        id: &Oid,
+    ) -> Result<AnnotatedCommit<'_>, Error> {
+        let branch_name = CString::new(branch_name)?;
+        let remote_url = CString::new(remote_url)?;
+
+        let mut ret = ptr::null_mut();
+        unsafe {
+            try_call!(raw::git_annotated_commit_from_fetchhead(
+                &mut ret,
+                self.raw(),
+                branch_name,
+                remote_url,
+                id.raw()
+            ));
+            Ok(AnnotatedCommit::from_raw(ret))
+        }
+    }
+
     /// Create a new action signature with default user and now timestamp.
     ///
     /// This looks up the user.name and user.email from the configuration and