git clone fails with "fatal: Not a git repository", "git remote update failed."

[Dolph Mathews]

Attempting to `git clone` nova in logs/devstack-gate-setup-workspace-new.txt [1] resulted in:

+ git clone https://git.openstack.org/openstack/nova
Cloning into 'nova'...
error: RPC failed; result=56, HTTP code = 200
fatal: The remote end hung up unexpectedly
fatal: protocol error: bad pack header
+ cd nova
/home/jenkins/workspace/gate-tempest-dsvm-large-ops/devstack-gate/functions.sh: line 98: cd: nova: No such file or directory
+ git_remote_set_url origin https://git.openstack.org/openstack/nova
+ git remote set-url origin https://git.openstack.org/openstack/nova
fatal: Not a git repository (or any parent up to mount parent )
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).

Which ultimately led to:

+ echo 'git remote update failed.'
git remote update failed.

[1]: http://logs.openstack.org/99/73699/11/gate/gate-tempest-dsvm-neutron/5d7df22/logs/devstack-gate-setup-workspace-new.txt