just drop the git commit hash (more trouble than it's worth)

package.json

@@ -80,7 +80,7 @@
   },
   "scripts": {
     "start": "react-scripts start",
-    "build": "cross-env REACT_APP_GIT_COMMIT_HASH=$(git show -s --format=%H) react-scripts build",
+    "build": "react-scripts build",
     "ipfs-build": "cross-env PUBLIC_URL=\".\" react-scripts build",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject",

src/components/Menu/index.tsx

@@ -77,9 +77,7 @@ const MenuItem = styled(ExternalLink)`
   }
 `
 
-const CODE_LINK = !!process.env.REACT_APP_GIT_COMMIT_HASH
-  ? `https://github.com/Uniswap/uniswap-frontend/tree/${process.env.REACT_APP_GIT_COMMIT_HASH}`
-  : 'https://github.com/Uniswap/uniswap-frontend'
+const CODE_LINK = 'https://github.com/Uniswap/uniswap-frontend'
 
 export default function Menu() {
   const node = useRef<HTMLDivElement>()

src/state/user/reducer.test.ts

+import { createStore, Store } from 'redux'
+import { DEFAULT_DEADLINE_FROM_NOW, INITIAL_ALLOWED_SLIPPAGE } from '../../constants'
+import { updateVersion } from './actions'
+import reducer, { initialState, UserState } from './reducer'
+
+describe('swap reducer', () => {
+  let store: Store<UserState>
+
+  beforeEach(() => {
+    store = createStore(reducer, initialState)
+  })
+
+  describe('updateVersion', () => {
+    it('has no timestamp originally', () => {
+      expect(store.getState().lastUpdateVersionTimestamp).toBeUndefined()
+    })
+    it('sets the lastUpdateVersionTimestamp', () => {
+      const time = new Date().getTime()
+      store.dispatch(updateVersion())
+      expect(store.getState().lastUpdateVersionTimestamp).toBeGreaterThanOrEqual(time)
+    })
+    it('sets allowed slippage and deadline', () => {
+      store = createStore(reducer, { ...initialState, userDeadline: undefined, userSlippageTolerance: undefined })
+      store.dispatch(updateVersion())
+      expect(store.getState().userDeadline).toEqual(DEFAULT_DEADLINE_FROM_NOW)
+      expect(store.getState().userSlippageTolerance).toEqual(INITIAL_ALLOWED_SLIPPAGE)
+    })
+  })
+})

src/state/user/reducer.ts

-import { INITIAL_ALLOWED_SLIPPAGE, DEFAULT_DEADLINE_FROM_NOW } from './../../constants/index'
+import { INITIAL_ALLOWED_SLIPPAGE, DEFAULT_DEADLINE_FROM_NOW } from '../../constants'
 import { createReducer } from '@reduxjs/toolkit'
 import {
   addSerializedPair,
@@ -18,8 +18,9 @@ import {
 
 const currentTimestamp = () => new Date().getTime()
 
-interface UserState {
-  lastVersion: string
+export interface UserState {
+  // the timestamp of the last updateVersion action
+  lastUpdateVersionTimestamp?: number
 
   userDarkMode: boolean | null // the user's choice for dark mode or light mode
   matchesDarkMode: boolean // whether the dark mode media query matches
@@ -59,8 +60,7 @@ function pairKey(token0Address: string, token1Address: string) {
   return `${token0Address};${token1Address}`
 }
 
-const initialState: UserState = {
-  lastVersion: '',
+export const initialState: UserState = {
   userDarkMode: null,
   matchesDarkMode: false,
   userExpertMode: false,
@@ -71,14 +71,9 @@ const initialState: UserState = {
   timestamp: currentTimestamp()
 }
 
-const GIT_COMMIT_HASH: string | undefined = process.env.REACT_APP_GIT_COMMIT_HASH
-
 export default createReducer(initialState, builder =>
   builder
     .addCase(updateVersion, state => {
-      if (GIT_COMMIT_HASH && state.lastVersion !== GIT_COMMIT_HASH) {
-        state.lastVersion = GIT_COMMIT_HASH
-
       // slippage isnt being tracked in local storage, reset to default
       if (typeof state.userSlippageTolerance !== 'number') {
         state.userSlippageTolerance = INITIAL_ALLOWED_SLIPPAGE
@@ -88,8 +83,8 @@ export default createReducer(initialState, builder =>
       if (typeof state.userDeadline !== 'number') {
         state.userDeadline = DEFAULT_DEADLINE_FROM_NOW
       }
-      }
-      state.timestamp = currentTimestamp()
+
+      state.lastUpdateVersionTimestamp = currentTimestamp()
     })
     .addCase(updateUserDarkMode, (state, action) => {
       state.userDarkMode = action.payload.userDarkMode