I've upgraded git to the latest version 2.46.1.windows.1 then jenkins and ssh agent plugin today and the ssh agent begins to throw:

```
org.jenkinsci.plugins.workflow.actions.ErrorAction$ErrorId: 48503fc2-3ea5-40d0-ba4e-107e3d764c04
java.lang.StringIndexOutOfBoundsException: begin 13, end -1, length 0
at java.base/java.lang.String.checkBoundsBeginEnd(Unknown Source)
at java.base/java.lang.String.substring(Unknown Source)
at PluginClassLoader for ssh-agent//com.cloudbees.jenkins.plugins.sshagent.exec.ExecRemoteAgent.getAgentValue(ExecRemoteAgent.java:146)
at PluginClassLoader for ssh-agent//com.cloudbees.jenkins.plugins.sshagent.exec.ExecRemoteAgent.parseAgentEnv(ExecRemoteAgent.java:130)
at PluginClassLoader for ssh-agent//com.cloudbees.jenkins.plugins.sshagent.exec.ExecRemoteAgent.<init>(ExecRemoteAgent.java:57)
at PluginClassLoader for ssh-agent//com.cloudbees.jenkins.plugins.sshagent.SSHAgentStepExecution.initRemoteAgent(SSHAgentStepExecution.java:121)
at PluginClassLoader for ssh-agent//com.cloudbees.jenkins.plugins.sshagent.SSHAgentStepExecution.start(SSHAgentStepExecution.java:35)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:323)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:196)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:124)
at jdk.internal.reflect.GeneratedMethodAccessor593.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:98)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1225)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1034)
at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:41)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
at PluginClassLoader for script-security//org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:180)
at PluginClassLoader for script-security//org.kohsuke.groovy.sandbox.GroovyInterceptor.onMethodCall(GroovyInterceptor.java:23)
at PluginClassLoader for script-security//org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:163)
at PluginClassLoader for script-security//org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:178)
at PluginClassLoader for script-security//org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:182)
at PluginClassLoader for script-security//org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:152)
at PluginClassLoader for script-security//org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:152)
at PluginClassLoader for script-security//org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:152)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:17)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.LoggingInvoker.methodCall(LoggingInvoker.java:105)
at WorkflowScript.run(WorkflowScript:49)
at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.each(CpsDefaultGroovyMethods:2125)
at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.each(CpsDefaultGroovyMethods:2110)
at com.cloudbees.groovy.cps.CpsDefaultGroovyMethods.each(CpsDefaultGroovyMethods:2151)
at WorkflowScript.run(WorkflowScript:40)
at _{}cps.transform{}_(Native Method)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:90)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:116)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:85)
at jdk.internal.reflect.GeneratedMethodAccessor249.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.impl.ClosureBlock.eval(ClosureBlock.java:46)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.Next.step(Next.java:83)
at PluginClassLoader for workflow-cps//com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:147)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:17)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:49)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:180)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:423)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:331)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:295)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService.lambda$wrap$4(CpsVmExecutorService.java:136)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139)
at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:68)
at jenkins.util.ErrorLoggingExecutorService.lambda$wrap$0(ErrorLoggingExecutorService.java:51)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.call(CpsVmExecutorService.java:53)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$1.call(CpsVmExecutorService.java:50)
at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:136)
at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:275)
at PluginClassLoader for workflow-cps//org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService.lambda$categoryThreadFactory$0(CpsVmExecutorService.java:50)
at java.base/java.lang.Thread.run(Unknown Source)
```

usage is simple, it was working every up to today:

```
sshagent(credentials: ['mrBot_gitlab']){
   pwsh "some git commands"
}
```

The gits ssh-agent is in the path and it was working until the update.