After upgrading to 'Jenkins Git Plugin' version 1.3.0, my jobs that specify an HTTPS URL to GitHub fail to clone the repository; changing the URL to the Git protocol solves the issue. The error produced with an HTTPS URL is this:

git version 1.7.9.5
ERROR: Problem fetching from origin / origin - could be unavailable. Continuing anyway
hudson.plugins.git.GitException: org.eclipse.jgit.api.errors.InvalidRemoteException: Invalid remote: origin
at org.jenkinsci.plugins.gitclient.JGitAPIImpl.fetch(JGitAPIImpl.java:212)
at hudson.plugins.git.GitAPI.fetch(GitAPI.java:230)
at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:793)
at hudson.plugins.git.GitSCM.access$000(GitSCM.java:57)
at hudson.plugins.git.GitSCM$2.invoke(GitSCM.java:1018)
at hudson.plugins.git.GitSCM$2.invoke(GitSCM.java:942)
at hudson.FilePath.act(FilePath.java:865)
at hudson.FilePath.act(FilePath.java:838)
at hudson.plugins.git.GitSCM.determineRevisionToBuild(GitSCM.java:942)
at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1101)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1353)
at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:683)
at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:588)
at hudson.model.Run.execute(Run.java:1567)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:237)
Caused by: org.eclipse.jgit.api.errors.InvalidRemoteException: Invalid remote: origin
at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:134)
at org.jenkinsci.plugins.gitclient.JGitAPIImpl.fetch(JGitAPIImpl.java:208)
... 17 more
Caused by: org.eclipse.jgit.errors.NoRemoteRepositoryException: https://github.com/bloomberg/ci-slave-recipes: https://github.com/bloomberg/ci-slave-recipes/info/refs?service=git-upload-pack not found
at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:465)
at org.eclipse.jgit.transport.TransportHttp.openFetch(TransportHttp.java:305)
at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:136)
at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:122)
at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1104)
at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:128)
... 18 more
ERROR: Could not fetch from any repository
FATAL: Could not fetch from any repository
hudson.plugins.git.GitException: Could not fetch from any repository
at hudson.plugins.git.GitSCM$2.invoke(GitSCM.java:1023)
at hudson.plugins.git.GitSCM$2.invoke(GitSCM.java:942)
at hudson.FilePath.act(FilePath.java:865)
at hudson.FilePath.act(FilePath.java:838)
at hudson.plugins.git.GitSCM.determineRevisionToBuild(GitSCM.java:942)
at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1101)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1353)
at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:683)
at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:588)
at hudson.model.Run.execute(Run.java:1567)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:237)