Fixed getCurrentCommitId so that the returned value doesn't contain…

… quotation marks on some Windows machines (#889)

* Fix return value of `getCurrentCommitId`

* Change the git command used to get the commit hash

* Update .changeset/kind-beds-divide.md

Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>

.changeset/kind-beds-divide.md

@@ -0,0 +1,5 @@
+---
+"@changesets/git": patch
+---
+
+Fixed `getCurrentCommitId` so that the returned value doesn't contain quotation marks on some Windows machines.

packages/git/src/index.ts

@@ -292,9 +292,7 @@ export async function getCurrentCommitId({
 }: {
   cwd: string;
 }): Promise<string> {
-  return (
-    await spawn("git", ["show", `--format="%h"`, "--no-patch"], { cwd })
-  ).stdout
+  return (await spawn("git", ["rev-parse", "--short", "HEAD"], { cwd })).stdout
     .toString()
     .trim();
 }