$ git clone -n https://src.fedoraproject.org/rpms/nwg-dock.git /var/lib/mock/f41-build-846002-162905/root/chroot_tmpdir/scmroot/nwg-dock
Cloning into '/var/lib/mock/f41-build-846002-162905/root/chroot_tmpdir/scmroot/nwg-dock'...
$ git fetch origin a440913799b4de1ab25fd4599a4526c36c9a9621:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nwg-dock
 * [new ref]         a440913799b4de1ab25fd4599a4526c36c9a9621 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a440913 Install nwg-dock config