$ git clone -n https://src.fedoraproject.org/rpms/kscreen.git /var/lib/mock/f39-build-1545531-36692/root/chroot_tmpdir/scmroot/kscreen
Cloning into '/var/lib/mock/f39-build-1545531-36692/root/chroot_tmpdir/scmroot/kscreen'...
$ git fetch origin 98f7ce4fdbb4c35f601e51733ea637f7d5fbd2c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kscreen
 * [new ref]         98f7ce4fdbb4c35f601e51733ea637f7d5fbd2c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98f7ce4 Update to 5.27.8