In case of <code>ca-certificates</code> failures, which may appears during https access to some repo:
dvdk@vagrant:~/desk-mx-l/yocto$ ./repo sync
Fetching projects: 11% (2/17) meta-freescale-3rdpartyfatal: unable to access 'https://source.codeaurora.org/external/imxsupport/meta-nxp-demo-experience/': server certificate verification failed. CAfile: /etc/ssl/certs/ca-
certificates.crt CRLfile: none