vendor: bump libgit2 to v1.3.0

Author: FnControlOption

script/bump-libgit2

@@ -4,11 +4,17 @@ set -e
 cd "$(dirname "$0")/../vendor/libgit2"
 
 git fetch origin
-git checkout origin/master
 
-LIBGIT2_SHA1=$(git rev-parse --verify HEAD)
+if [ "$#" -gt 0 ]
+then
+    git checkout "$1"
+    LIBGIT2_SHA1="$1"
+else
+    git checkout origin/main
+    LIBGIT2_SHA1=$(git rev-parse --verify HEAD)
+fi
 
 cd "../../"
 
 git add vendor/libgit2
-git commit -m "Bump libgit2 to $LIBGIT2_SHA1"
+git commit -m "vendor: bump libgit2 to $LIBGIT2_SHA1"