$ git clone -n https://src.fedoraproject.org/rpms/kscreen.git /var/lib/mock/f38-build-side-42-init-devel-654693-26589/root/chroot_tmpdir/scmroot/kscreen
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-654693-26589/root/chroot_tmpdir/scmroot/kscreen'...
$ git fetch origin e44985d47d1b9ddecb1ed7a399e15e94a5423329:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kscreen
 * [new ref]         e44985d47d1b9ddecb1ed7a399e15e94a5423329 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e44985d 5.27.4