WIP: add upstream flag

TODO: explain fetching

create_challenge.sh

@@ -87,6 +87,15 @@ commit -m 'README: add explanation on status and diff'
 git init --bare ./.git/my-origin
 git remote add origin ./.git/my-origin
 git push --set-upstream origin @
+(
+cd .git
+git clone ./my-origin another-downstream
+cd another-downstream
+reproducibility_setup 2
+echo "Flag: SwimmingUpstream" >> README.md
+commit -a --amend --no-edit
+git push -f
+)
 
 # tmp file, because gnused and MacOS/FreeBSD sed handle "-i" differently
 # `{N;N;d:}` for deleting the following (empty) line as well

lib.sh

@@ -42,6 +42,6 @@ reproducibility_setup() {
     export GIT_CONFIG_GLOBAL=""
 
     # use fixed user
-    git config user.name "Nuggit Challenge"
-    git config user.email nuggit-challenge@gmail.com
+    git config user.name "Nuggit$1 Challenge"
+    git config user.email "nuggit-challenge${1:+"+$1"}@gmail.com"
 }

test.sh

@@ -28,6 +28,10 @@ fi
 echo 'restore should not show Switcheridoo flag'
 git restore README.md 2>&1 | grep --quiet "Flag: Switcheridoo" && exit 1 || :
 
+echo 'SwimmingUpstream in origin/main'
+git fetch -q
+git show origin/main | grep --quiet "Flag: SwimmingUpstream"
+
 echo 'ShowMeMore in branch commit'
 exec $(sed -n '/^```sh$/,/^```$/{n;p;}' commit.md) | grep --quiet "Flag: ShowMeMore"