$ git clone -n https://src.fedoraproject.org/rpms/nwg-drawer.git /var/lib/mock/f42-build-866781-174124/root/chroot_tmpdir/scmroot/nwg-drawer
Cloning into '/var/lib/mock/f42-build-866781-174124/root/chroot_tmpdir/scmroot/nwg-drawer'...
$ git fetch origin a3de351ffc66eb09d7bf5cc63990e3cda1d6ef34:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nwg-drawer
 * [new ref]         a3de351ffc66eb09d7bf5cc63990e3cda1d6ef34 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3de351 Install nwg-drawer assets