Hook is slow when pushing a new branch

[Carolyn Van Slyck]

When pushing a new branch, the hook is extremely slow.

[Carolyn Van Slyck]

Stash is passing 0 as the from SHA when pushing to a new branch, causing the hook to evaluate all change sets, not just the new ones included in the push.

See https://answers.atlassian.com/questions/223143/how-to-get-only-new-changesets-in-pre-receive-hook-on-new-branch-push

Since identifying the commits included in the push is not very straightforward, and only new branches are affected, it makes more sense to just not check for merge commits on new branches.

[Carolyn Van Slyck]

Fix issue #4

Do not check for merge commits on new branches

→ <<cset 58299076fa43>>

[Dan Cruver]

We were having this same issue and we found this pull request. My admin compiled your 1.0.3 tag and it seemed to do the trick. Thank you.

[Carolyn Van Slyck]

Issue #5 was marked as a duplicate of this issue.

[Carolyn Van Slyck]

I have released version 1.0.3 to the marketplace:

https://marketplace.atlassian.com/plugins/com.carolynvs.reject-merge-commit-hook