gistfile1.sh

mkdir /tmp/test
cd /tmp/test
git init
git remote add origin git@host:test1.git
git remote set-url --add origin git@host:test2.git
touch file
git add file
git commit -m 'commit 1'
git push origin master
echo change 1.1 > file
git commit -m 'commit 2.1'
git remote set-url --delete origin git@host:test2.git
git push origin master
git remote set-url --add origin git@host:test2.git
git log --oneline
# ee4eae9 commit 2.1
# 5014d02 commit 1
git reset --head HEAD~
echo change 1.2 > file
git add file
git commit -m 'commit 2.2'
git log --oneline
# 046151c commit 2.2
# 5014d02 commit 1
git push origin master
# To git@host:test1.git
#  ! [rejected]        master -> master (non-fast-forward)
#  error: failed to push some refs to 'git@host:test1.git'
#  Counting objects: 5, done.
#  Writing objects: 100% (3/3), 247 bytes, done.
#  Total 3 (delta 0), reused 0 (delta 0)
#  To git@host:test2.git
#     5014d02..046151c  master -> master
git log --oneline
# 046151c commit 2.2
# 5014d02 commit 1
git pull --rebase origin master
git log --oneline
# ee4eae9 commit 2.1
# 5014d02 commit 1