When we merge with squash commit Jenkins fail with the following error
`

{{09:27:56 stdout: d8fd53f8c5c1522678cfae1af81f2c61eb1ec8a3^{commit}
09:27:56
09:27:56 stderr: fatal: ambiguous argument 'd8fd53f8c5c1522678cfae1af81f2c61eb1ec8a3^{commit}': unknown revision or path not in the working tree.
09:27:56 Use '--' to separate paths from revisions, like this:
09:27:56 'git <command> [<revision>...] – [<file>...]```

However when we merge without squash commit, pipeline runs successful
This issue happen when we checkout using gitlab plugin and below is the Jenkins checkout script

checkout changelog: true, poll: true, scm: [
$class: 'GitSCM',
branches: [[name: "origin/${env.gitlabSourceBranch}"]],
doGenerateSubmoduleConfigurations: false,
extensions: [],
submoduleCfg: [],
userRemoteConfigs: [[
credentialsId: "gitlab-ssh",
url: gitlabTargetRepoSshUrl
]]
]}}

{{}}

But when we merge without squash commit the build is successful. 

Please can you advise?