git revision ranges in LATEST_COMMIT_SINCE_LAST_BUILD don't work in CircleCI

[Tovieye Moses Ozi]

The trigger script uses a <branch name>..<sha1> git revision range to obtain the LATEST_COMMIT_SINCE_LAST_BUILD. This revision range format does not work on CircleCI at this time.

https://stackoverflow.com/questions/61228078/git-rev-list-with-a-gitrevision-range-argument-on-circleci-build-not-working/61348399#61348399