$ git clone -n https://github.com/xcp-ng-rpms/cmocka.git /var/lib/mock/v8.3-u-pcoval1-11103-29528/root/chroot_tmpdir/scmroot/cmocka
Cloning into '/var/lib/mock/v8.3-u-pcoval1-11103-29528/root/chroot_tmpdir/scmroot/cmocka'...
$ git fetch origin 06a508f3ac7d25bd6ce9a1c54c29cc3624416d1b:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/cmocka
 * [new ref]         06a508f3ac7d25bd6ce9a1c54c29cc3624416d1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06a508f bump release for test build