I've just set up TeamCity 8.0 on Windows to build the projects (Visual Studio solutions) in four separate Git repositories. It is working as expected on three of them, but on one it gets stuck at Updating sources. The settings for the four VCS roots are identical (apart from the Git repo fetch URLs).
All of the TeamCity projects are using server-side checkout.
The build log for the problematic project contains
[15:36:34]: bt1 (running for 41m:38s)
[15:36:34]: Checking for changes (running for 41m:37s)
[15:36:37]: Publishing internal artifacts
[15:36:38]: [Publishing internal artifacts] Sending build.start.properties.gz file
[15:36:37]: Clearing temporary directory: C:\TeamCity\buildAgent\temp\buildTmp
[15:36:37]: Checkout directory: C:\TeamCity\buildAgent\work\62d0281b7178c739
[15:36:37]: Updating sources: server side checkout (running for 41m:34s)
[15:36:38]: [Updating sources] Will perform clean checkout. Reason: Agent doesn't have any version of the project sources
[15:36:38]: [Updating sources] Building and caching clean patch for VCS root: email@example.com
Using Process Monitor on the build agent I can see that it is hammering the following folder with ReadFile operations. C:\ProgramData\JetBrains\TeamCity\system\caches\git\git-11F9493A.git\objects\pack\pack-1490ccc8f7896ab876413465c4b48e87448bed35.pack
file is about 300MB in size, which I believe to be the same size as the Git repo.
I've tried deleting this folder and re-starting the TeamCity build agent and build server Windows services, but it just get re-created and then TeamCity hammers it once more.
Are there any other recommendations for how to troubleshoot this kind of issue?
(Question also posted on StackOverflow