$ git clone -n https://src.fedoraproject.org/rpms/libkscreen-qt5.git /var/lib/mock/f45-build-16456-486/root/chroot_tmpdir/scmroot/libkscreen-qt5
Cloning into '/var/lib/mock/f45-build-16456-486/root/chroot_tmpdir/scmroot/libkscreen-qt5'...
$ git fetch origin 67aaeaa8f8a68b4dd46bb93e0ad97a5308202179:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkscreen-qt5
 * [new ref]         67aaeaa8f8a68b4dd46bb93e0ad97a5308202179 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67aaeaa Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild