Correctly set base sha when multiple releases are in progress#63

RomainCscn wants to merge 3 commits intoromain/lin-69346-github-release-action-misses-issues-merged-into-releaselinear/linear-release:romain/lin-69346-github-release-action-misses-issues-merged-into-releasefrom

romain/lin-69484-ci-release-sync-can-pick-a-wrong-base-sha-when-multiplelinear/linear-release:romain/lin-69484-ci-release-sync-can-pick-a-wrong-base-sha-when-multipleCopy head branch name to clipboard