git network user name for authentication not working in windows

I am trying to access my git repo hosted under IIS with Windows Authentication enabled. When i specify the username like domain\username the connection fails. From the stack trace it looks like the error is due to the way the network username is given. How else can we give the windows auth user which has domain in them.

This works fine from the console when i do a git clone  ( https:/domain\user@mydomain.com/xyz/)

Error details

Test connection failed in Git Repo:: Git Repo. List remote refs failed: java.net.ConnectException: Cannot determine proxy for ....

Stacktrace

Caused by: org.eclipse.jgit.errors.TransportException: https:/domain\user@mydomain.com/xyz/info/refs?service=git-upload-pack
 at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:466)
 at org.eclipse.jgit.transport.TransportHttp.openFetch(TransportHttp.java:276)
 at jetbrains.buildServer.buildTriggers.vcs.git.GitVcsSupport.getRemoteRefs(GitVcsSupport.java:523)
 at jetbrains.buildServer.buildTriggers.vcs.git.GitVcsSupport.getRemoteRefs(GitVcsSupport.java:503)
 ... 44 more
Caused by: java.net.ConnectException: Cannot determine proxy for https:/domain\user@mydomain.com/xyz/info/refs?service=git-upload-pack
 at org.eclipse.jgit.util.HttpSupport.proxyFor(HttpSupport.java:196)
 at org.eclipse.jgit.transport.TransportHttp.httpOpen(TransportHttp.java:475)
 at org.eclipse.jgit.transport.TransportHttp.httpOpen(TransportHttp.java:471)
 at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:422)
 ... 47 more
Caused by: java.net.URISyntaxException: Illegal character in authority at index 8: https:/domain\user@mydomain.com/xyz/info/refs?service=git-upload-pack

 at java.net.URI$Parser.fail(Unknown Source)
 at java.net.URI$Parser.parseAuthority(Unknown Source)
 at java.net.URI$Parser.parseHierarchical(Unknown Source)
 at java.net.URI$Parser.parse(Unknown Source)
 at java.net.URI.<init>(Unknown Source)
 at java.net.URL.toURI(Unknown Source)
 at org.eclipse.jgit.util.HttpSupport.proxyFor(HttpSupport.java:193)