on.plugins.git.GitException: Command "C:\Program Files\Git\cmd\git.exe submodule update --depth=1 Config/CAN/CAN_Project_Specific/CanDatabase" returned status code 1:
 stdout: 
 stderr: Cloning into 'D:/jenkins_agent/workspace/mylib/DEV_Build/repo/Config/CAN/CAN_Project_Specific/CanDatabase'...
 fatal: remote transport reported error
 fatal: clone of 'ssh://git@mybitbucket.de/mscandb/can-database.git' into submodule path 'D:/jenkins_agent/workspace/mylib/DEV_Build/repo/Config/CAN/CAN_Project_Specific/CanDatabase' failed
 Failed to clone 'Config/CAN/CAN_Project_Specific/CanDatabase'. Retry scheduled
 Cloning into 'D:/jenkins_agent/workspace/mylib/DEV_TeamCenterBuild/repo/Config/CAN/CAN_Project_Specific/CanDatabase'...
 fatal: remote transport reported error
 fatal: clone of 'ssh://git@mybitbucket.de/mscandb/can-database.git' into submodule path 'D:/jenkins_agent/workspace/mylib/DEV_Build/repo/Config/CAN/CAN_Project_Specific/CanDatabase' failed
 Failed to clone 'Config/CAN/CAN_Project_Specific/CanDatabase' a second time, aborting
 
 	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2675)
 	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:2099)
 	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$500(CliGitAPIImpl.java:85)
 	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$7.lambda$execute$0(CliGitAPIImpl.java:1506)
 	at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:131)
 	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:74)
 	at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:82)
 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
 	at com.google.common.util.concurrent.MoreExecutors$DirectExecutorService.execute(MoreExecutors.java:323)
 	at java.base/java.util.concurrent.ExecutorCompletionService.submit(ExecutorCompletionService.java:184)
 	at org.jenkinsci.plugins.gitclient.cgit.GitCommandsExecutor.submitRemainingCommand(GitCommandsExecutor.java:98)
 	at org.jenkinsci.plugins.gitclient.cgit.GitCommandsExecutor.invokeAll(GitCommandsExecutor.java:92)
 Also:   hudson.remoting.Channel$CallSiteStackTrace: Remote call to JNLP4-connect connection from myjenkins.com/123.456.789.123:57427
 		at hudson.remoting.Channel.attachCallSiteStackTrace(Channel.java:1784)
 		at hudson.remoting.UserRequest$ExceptionResponse.retrieve(UserRequest.java:356)
 		at hudson.remoting.Channel.call(Channel.java:1000)
 		at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.execute(RemoteGitImpl.java:143)
 		at jdk.internal.reflect.GeneratedMethodAccessor1102.invoke(Unknown Source)
 		at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 		at java.base/java.lang.reflect.Method.invoke(Method.java:566)
 		at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler.invoke(RemoteGitImpl.java:129)
 		at com.sun.proxy.$Proxy199.execute(Unknown Source)
 		at hudson.plugins.git.extensions.impl.SubmoduleOption.onCheckoutCompleted(SubmoduleOption.java:160)
 		at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1393)
 		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:129)
 		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:97)
 		at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:84)
 		at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
 		at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
 		at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
 		at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
 		at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
 Caused: hudson.plugins.git.GitException
 	at org.jenkinsci.plugins.gitclient.cgit.GitCommandsExecutor.checkResult(GitCommandsExecutor.java:110)
 	at org.jenkinsci.plugins.gitclient.cgit.GitCommandsExecutor.invokeAll(GitCommandsExecutor.java:91)
 	at org.jenkinsci.plugins.gitclient.cgit.GitCommandsExecutor.invokeAll(GitCommandsExecutor.java:49)
 	at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$7.execute(CliGitAPIImpl.java:1509)
 	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:158)
 	at org.jenkinsci.plugins.gitclient.RemoteGitImpl$CommandInvocationHandler$GitCommandMasterToSlaveCallable.call(RemoteGitImpl.java:151)
 	at hudson.remoting.UserRequest.perform(UserRequest.java:211)
 	at hudson.remoting.UserRequest.perform(UserRequest.java:54)
 	at hudson.remoting.Request$2.run(Request.java:376)
 	at hudson.remoting.InterceptingExecutorService.lambda$wrap$0(InterceptingExecutorService.java:78)
 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
 	at hudson.remoting.Engine$1.lambda$newThread$0(Engine.java:125)
 Caused: java.io.IOException: Could not perform submodule update
 	at hudson.plugins.git.extensions.impl.SubmoduleOption.onCheckoutCompleted(SubmoduleOption.java:165)
 	at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1393)
 	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:129)
 	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:97)
 	at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:84)
 	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
 	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
 	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
 	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
 	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
 	at java.base/java.lang.Thread.run(Thread.java:829)