Создайте новую филиал на основе другой филиала
//when on branch 'dev' make branch 'myFeature' off of 'dev'
git checkout -b myFeature dev
Vivacious Vicuña
//when on branch 'dev' make branch 'myFeature' off of 'dev'
git checkout -b myFeature dev
$ git checkout -b myFeature dev
$ git checkout -b myfeature dev
git checkout -b subbranch_of_branch1 branch1