use a timeout for commands involving network

autogitmerge.mjs

@@ -27,9 +27,9 @@ if (!fs.existsSync(wd)) {
 cd(wd)
 let reportedConflictHashes
 while (true) {
-  await retry(30, expBackoff(), () => $`git remote prune project`)
-  await retry(30, expBackoff(), () => $`git remote prune upstream`)
-  await retry(30, expBackoff(), () => $`git fetch --all`)
+  await retry(30, expBackoff(), () => $`git remote prune project`.timeout('600s'))
+  await retry(30, expBackoff(), () => $`git remote prune upstream`.timeout('600s'))
+  await retry(30, expBackoff(), () => $`git fetch --all`.timeout('600s'))
 
   await $`git reset --hard project/${config.project.branch}`
   let mergeSuccess = true;
@@ -79,7 +79,7 @@ ${gitOutput}
     }
   }
   if (mergeSuccess) {
-    await retry(30, expBackoff(), () => $`git push project ${config.project.branch}`)
+    await retry(30, expBackoff(), () => $`git push project ${config.project.branch}`.timeout('600s'))
   }
   await sleep(interval)
 }