$ git clone -n https://github.com/xcp-ng-rpms/python-pycurl /var/lib/mock/v8.3-incoming-10686-29237/root/chroot_tmpdir/scmroot/python-pycurl
Cloning into '/var/lib/mock/v8.3-incoming-10686-29237/root/chroot_tmpdir/scmroot/python-pycurl'...
$ git fetch origin 78a60fddb8e51bd99e38d5845dee778ae98c387a:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/python-pycurl
 * [new ref]         78a60fddb8e51bd99e38d5845dee778ae98c387a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 78a60fd Merge pull request #1 from xcp-ng-rpms/8.3-XS-1557