$ git clone -n https://src.fedoraproject.org/rpms/photoqt.git /var/lib/mock/f42-build-side-1-3589217-46954/root/chroot_tmpdir/scmroot/photoqt
Cloning into '/var/lib/mock/f42-build-side-1-3589217-46954/root/chroot_tmpdir/scmroot/photoqt'...
$ git fetch origin 7c2f2974365681c60dc8d7064923e0c9d065d8b2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/photoqt
 * [new ref]         7c2f2974365681c60dc8d7064923e0c9d065d8b2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c2f297 Update to 4.9.1