$ git clone -n https://src.fedoraproject.org/rpms/kf5-kdeclarative.git /var/lib/mock/f38-build-729617-101821/root/chroot_tmpdir/scmroot/kf5-kdeclarative
Cloning into '/var/lib/mock/f38-build-729617-101821/root/chroot_tmpdir/scmroot/kf5-kdeclarative'...
$ git fetch origin 390486dcafab710a279022cb408f20866039ce58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kdeclarative
 * [new ref]         390486dcafab710a279022cb408f20866039ce58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 390486d 5.107.0