Avoid merging in a branch that has open PR

Question

We use a simplified version of the GitFlow.

All devs merge branches in `dev` branch. When we want to release we merge `dev` into `master` and we release.

I would like to temporary disable the possibility to merge into `dev` if there is an open PR from `dev` to `master`

Once the PR `dev` -> `master` has been merged merging into `dev` still became available.

Is this possible ?

Simone Fumagalli · Answer

I don't understand how this can solve my problem. I've changed a bit my question to make it more clear.

Alexey Matveev · Answer

I see. then you should set permissions not on the dev branch, but on the master branch.

Simone Fumagalli · Answer

I don't want do that. I want everyone be able to merge in `dev` and I want to avoid ppl merge in `dev` when a PR from `dev` to `master` is open.