$ git clone -n https://src.fedoraproject.org/rpms/rubygem-codeclimate-test-reporter.git /var/lib/mock/f40-build-2033594-47820/root/chroot_tmpdir/scmroot/rubygem-codeclimate-test-reporter
Cloning into '/var/lib/mock/f40-build-2033594-47820/root/chroot_tmpdir/scmroot/rubygem-codeclimate-test-reporter'...
$ git fetch origin 299a5a91ccb07f3f0232e5e5bb7cc2cd4c5f6ee3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-codeclimate-test-reporter
 * [new ref]         299a5a91ccb07f3f0232e5e5bb7cc2cd4c5f6ee3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 299a5a9 add new sources