diff --git a/extension/bwcontest/package-lock.json b/extension/bwcontest/package-lock.json
index b4b7c36..56b7e14 100644
--- a/extension/bwcontest/package-lock.json
+++ b/extension/bwcontest/package-lock.json
@@ -11,6 +11,7 @@
 				"@vscode/vsce": "^2.21.1",
 				"axios": "^1.5.1",
 				"fs-extra": "^11.1.1",
+				"isomorphic-git": "^1.24.5",
 				"tree-kill": "^1.2.2",
 				"url-join": "^5.0.0"
 			},
@@ -1470,6 +1471,11 @@
 				"node": ">=8"
 			}
 		},
+		"node_modules/async-lock": {
+			"version": "1.4.0",
+			"resolved": "https://registry.npmjs.org/async-lock/-/async-lock-1.4.0.tgz",
+			"integrity": "sha512-coglx5yIWuetakm3/1dsX9hxCNox22h7+V80RQOu2XUUMidtArxKoZoOtHUPuR84SycKTXzgGzAUR5hJxujyJQ=="
+		},
 		"node_modules/asynckit": {
 			"version": "0.4.0",
 			"resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
@@ -1951,6 +1957,11 @@
 			"integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg==",
 			"optional": true
 		},
+		"node_modules/clean-git-ref": {
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/clean-git-ref/-/clean-git-ref-2.0.1.tgz",
+			"integrity": "sha512-bLSptAy2P0s6hU4PzuIMKmMJJSE6gLXGH1cntDu7bWJUksvuM+7ReOK61mozULErYvP6a15rnYl0zFDef+pyPw=="
+		},
 		"node_modules/cliui": {
 			"version": "7.0.4",
 			"resolved": "https://registry.npmjs.org/cliui/-/cliui-7.0.4.tgz",
@@ -2134,6 +2145,17 @@
 			"integrity": "sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ==",
 			"dev": true
 		},
+		"node_modules/crc-32": {
+			"version": "1.2.2",
+			"resolved": "https://registry.npmjs.org/crc-32/-/crc-32-1.2.2.tgz",
+			"integrity": "sha512-ROmzCKrTnOwybPcJApAA6WBWij23HVfGVNKqqrZpuyZOHqK2CwHSvpGuyt/UNNvaIjEd8X5IFGp4Mh+Ie1IHJQ==",
+			"bin": {
+				"crc32": "bin/crc32.njs"
+			},
+			"engines": {
+				"node": ">=0.8"
+			}
+		},
 		"node_modules/cross-spawn": {
 			"version": "7.0.3",
 			"resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
@@ -2349,7 +2371,6 @@
 			"version": "6.0.0",
 			"resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-6.0.0.tgz",
 			"integrity": "sha512-aW35yZM6Bb/4oJlZncMH2LCoZtJXTRxES17vE3hoRiowU2kWHaJKFkSBDnDR+cm9J+9QhXmREyIfv0pji9ejCQ==",
-			"optional": true,
 			"dependencies": {
 				"mimic-response": "^3.1.0"
 			},
@@ -2428,6 +2449,11 @@
 				"node": ">=0.3.1"
 			}
 		},
+		"node_modules/diff3": {
+			"version": "0.0.3",
+			"resolved": "https://registry.npmjs.org/diff3/-/diff3-0.0.3.tgz",
+			"integrity": "sha512-iSq8ngPOt0K53A6eVr4d5Kn6GNrM2nQZtC740pzIriHtn4pOQ2lyzEXQMBeVcWERN0ye7fhBsk9PbLLQOnUx/g=="
+		},
 		"node_modules/dir-glob": {
 			"version": "3.0.1",
 			"resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-3.0.1.tgz",
@@ -3350,7 +3376,6 @@
 			"version": "5.2.4",
 			"resolved": "https://registry.npmjs.org/ignore/-/ignore-5.2.4.tgz",
 			"integrity": "sha512-MAb38BcSbH0eHNBxn7ql2NH/kX33OkB3lZ1BNdh7ENeRChHTYsTvWrMubiIAMNS2llXEEgZ1MUOBtXChP3kaFQ==",
-			"dev": true,
 			"engines": {
 				"node": ">= 4"
 			}
@@ -3574,6 +3599,51 @@
 			"integrity": "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==",
 			"dev": true
 		},
+		"node_modules/isomorphic-git": {
+			"version": "1.24.5",
+			"resolved": "https://registry.npmjs.org/isomorphic-git/-/isomorphic-git-1.24.5.tgz",
+			"integrity": "sha512-07M4YscftHZJIuw7xZhgWkdFvVjHSBJBsIwWXkxgFCivhb0l8mGNchM7nO2hU27EKSIf0sT4gJivEgLGohWbzA==",
+			"dependencies": {
+				"async-lock": "^1.1.0",
+				"clean-git-ref": "^2.0.1",
+				"crc-32": "^1.2.0",
+				"diff3": "0.0.3",
+				"ignore": "^5.1.4",
+				"minimisted": "^2.0.0",
+				"pako": "^1.0.10",
+				"pify": "^4.0.1",
+				"readable-stream": "^3.4.0",
+				"sha.js": "^2.4.9",
+				"simple-get": "^4.0.1"
+			},
+			"bin": {
+				"isogit": "cli.cjs"
+			},
+			"engines": {
+				"node": ">=12"
+			}
+		},
+		"node_modules/isomorphic-git/node_modules/pify": {
+			"version": "4.0.1",
+			"resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
+			"integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==",
+			"engines": {
+				"node": ">=6"
+			}
+		},
+		"node_modules/isomorphic-git/node_modules/readable-stream": {
+			"version": "3.6.2",
+			"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
+			"integrity": "sha512-9u/sniCrY3D5WdsERHzHE4G2YCXqoG5FTHUiCC4SIbr6XcLZBY05ya9EKjYek9O5xOAwjGq+1JdGBAS7Q9ScoA==",
+			"dependencies": {
+				"inherits": "^2.0.3",
+				"string_decoder": "^1.1.1",
+				"util-deprecate": "^1.0.1"
+			},
+			"engines": {
+				"node": ">= 6"
+			}
+		},
 		"node_modules/jackspeak": {
 			"version": "2.3.6",
 			"resolved": "https://registry.npmjs.org/jackspeak/-/jackspeak-2.3.6.tgz",
@@ -3891,7 +3961,6 @@
 			"version": "3.1.0",
 			"resolved": "https://registry.npmjs.org/mimic-response/-/mimic-response-3.1.0.tgz",
 			"integrity": "sha512-z0yWI+4FDrrweS8Zmt4Ej5HdJmky15+L2e6Wgn3+iK5fWzb6T3fhNFq2+MeTRb064c6Wr4N/wv0DzQTjNzHNGQ==",
-			"optional": true,
 			"engines": {
 				"node": ">=10"
 			},
@@ -3923,11 +3992,18 @@
 			"version": "1.2.8",
 			"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz",
 			"integrity": "sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==",
-			"devOptional": true,
 			"funding": {
 				"url": "https://github.com/sponsors/ljharb"
 			}
 		},
+		"node_modules/minimisted": {
+			"version": "2.0.1",
+			"resolved": "https://registry.npmjs.org/minimisted/-/minimisted-2.0.1.tgz",
+			"integrity": "sha512-1oPjfuLQa2caorJUM8HV8lGgWCc0qqAO1MNv/k05G4qslmsndV/5WdNZrqCiyqiz3wohia2Ij2B7w2Dr7/IyrA==",
+			"dependencies": {
+				"minimist": "^1.2.5"
+			}
+		},
 		"node_modules/minipass": {
 			"version": "7.0.3",
 			"resolved": "https://registry.npmjs.org/minipass/-/minipass-7.0.3.tgz",
@@ -4272,8 +4348,7 @@
 		"node_modules/pako": {
 			"version": "1.0.11",
 			"resolved": "https://registry.npmjs.org/pako/-/pako-1.0.11.tgz",
-			"integrity": "sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw==",
-			"dev": true
+			"integrity": "sha512-4hLB8Py4zZce5s4yd9XzopqwVv/yGNhV1Bl8NTmCq1763HeK2+EwVTv+leGeL13Dnh2wfbqowVPXCIO0z4taYw=="
 		},
 		"node_modules/parent-module": {
 			"version": "1.0.1",
@@ -5511,8 +5586,7 @@
 		"node_modules/safe-buffer": {
 			"version": "5.1.2",
 			"resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-			"integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
-			"devOptional": true
+			"integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
 		},
 		"node_modules/safe-identifier": {
 			"version": "0.4.2",
@@ -5598,6 +5672,18 @@
 			"integrity": "sha512-MATJdZp8sLqDl/68LfQmbP8zKPLQNV6BIZoIgrscFDQ+RsvK/BxeDQOgyxKKoh0y/8h3BqVFnCqQ/gd+reiIXA==",
 			"dev": true
 		},
+		"node_modules/sha.js": {
+			"version": "2.4.11",
+			"resolved": "https://registry.npmjs.org/sha.js/-/sha.js-2.4.11.tgz",
+			"integrity": "sha512-QMEp5B7cftE7APOjk5Y6xgrbWu+WkLVQwk8JNjZ8nKRciZaByEW6MubieAiToS7+dwvrjGhH8jRXz3MVd0AYqQ==",
+			"dependencies": {
+				"inherits": "^2.0.1",
+				"safe-buffer": "^5.0.1"
+			},
+			"bin": {
+				"sha.js": "bin.js"
+			}
+		},
 		"node_modules/shebang-command": {
 			"version": "2.0.0",
 			"resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
@@ -5670,8 +5756,7 @@
 					"type": "consulting",
 					"url": "https://feross.org/support"
 				}
-			],
-			"optional": true
+			]
 		},
 		"node_modules/simple-get": {
 			"version": "4.0.1",
@@ -5691,7 +5776,6 @@
 					"url": "https://feross.org/support"
 				}
 			],
-			"optional": true,
 			"dependencies": {
 				"decompress-response": "^6.0.0",
 				"once": "^1.3.1",
@@ -5773,7 +5857,6 @@
 			"version": "1.1.1",
 			"resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
 			"integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-			"devOptional": true,
 			"dependencies": {
 				"safe-buffer": "~5.1.0"
 			}
@@ -6347,8 +6430,7 @@
 		"node_modules/util-deprecate": {
 			"version": "1.0.2",
 			"resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-			"integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
-			"devOptional": true
+			"integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw=="
 		},
 		"node_modules/which": {
 			"version": "2.0.2",
diff --git a/extension/bwcontest/package.json b/extension/bwcontest/package.json
index 2eab73e..6a0f469 100644
--- a/extension/bwcontest/package.json
+++ b/extension/bwcontest/package.json
@@ -101,6 +101,7 @@
 		"@vscode/vsce": "^2.21.1",
 		"axios": "^1.5.1",
 		"fs-extra": "^11.1.1",
+		"isomorphic-git": "^1.24.5",
 		"tree-kill": "^1.2.2",
 		"url-join": "^5.0.0"
 	}
diff --git a/extension/bwcontest/src/extension.ts b/extension/bwcontest/src/extension.ts
index 25c9d72..f6722a8 100644
--- a/extension/bwcontest/src/extension.ts
+++ b/extension/bwcontest/src/extension.ts
@@ -1,8 +1,10 @@
 import * as vscode from 'vscode';
 import { SidebarProvider } from './SidebarProvider';
-import * as child_process from 'child_process';
 import * as fs from 'fs-extra';
 import urlJoin from 'url-join';
+import git from 'isomorphic-git';
+import path = require('path');
+import http from 'isomorphic-git/http/node';
 
 export interface BWContestSettings {
 	repoBaseUrl: string;
@@ -74,16 +76,18 @@ export async function cloneAndOpenRepo(contestId: number, teamId: number) {
 		fs.removeSync(clonedRepoPath);
 	}
 
-	child_process.exec(
-		`git clone ${repoUrl}`,
-		{ cwd: `${currentSettings.repoClonePath}/BWContest/${contestId.toString()}` },
-		(error, stdout, stderr) => {
-			if (error) {
-				vscode.window.showErrorMessage(`BWContest: Failed to clone repo: ${error.message}`);
-				return;
-			}
-		}
-	);
+	// child_process.exec(
+	// 	`git clone ${repoUrl}`,
+	// 	{ cwd: `${currentSettings.repoClonePath}/BWContest/${contestId.toString()}` },
+	// 	(error, stdout, stderr) => {
+	// 		if (error) {
+	// 			vscode.window.showErrorMessage(`BWContest: Failed to clone repo: ${error.message}`);
+	// 			return;
+	// 		}
+	// 	}
+	// );
+	const dir = path.join(currentSettings.repoClonePath, 'BWContest', contestId.toString());
+	await git.clone({ fs, http, dir, url: repoUrl });
 
 	const addedFolder = vscode.workspace.updateWorkspaceFolders(
 		vscode.workspace.workspaceFolders?.length ?? 0,