$ git clone -n https://src.fedoraproject.org/rpms/photoqt.git /var/lib/mock/f38-build-side-42-init-devel-723558-27298/root/chroot_tmpdir/scmroot/photoqt
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-723558-27298/root/chroot_tmpdir/scmroot/photoqt'...
$ git fetch origin 7d6dcf751c939a2f658b7e7bfb2316470bc215b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/photoqt
 * [new ref]         7d6dcf751c939a2f658b7e7bfb2316470bc215b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d6dcf7 Update to 3.0