Restore branch and git sha, to use it in logs and in rageshakes.

Remove quite useless `gitRevisionDate`.

app/build.gradle.kts

@@ -20,6 +20,8 @@ import com.android.build.api.variant.FilterConfiguration.FilterType.ABI
 import extension.allFeaturesImpl
 import extension.allLibrariesImpl
 import extension.allServicesImpl
+import extension.gitBranchName
+import extension.gitRevision
 import extension.koverDependencies
 import extension.setupKover
 import org.jetbrains.kotlin.cli.common.toBooleanLenient
@@ -54,6 +56,9 @@ android {
             abiFilters += listOf("armeabi-v7a", "x86", "arm64-v8a", "x86_64")
         }
 
+        buildConfigField("String", "GIT_REVISION", "\"${gitRevision()}\"")
+        buildConfigField("String", "GIT_BRANCH_NAME", "\"${gitBranchName()}\"")
+
         // Ref: https://developer.android.com/studio/build/configure-apk-splits.html#configure-abi-split
         splits {
             // Configures multiple APKs based on ABI.