$ git clone -n https://src.fedoraproject.org/rpms/dtkgui.git /var/lib/mock/f45-build-47251-865/root/chroot_tmpdir/scmroot/dtkgui
Cloning into '/var/lib/mock/f45-build-47251-865/root/chroot_tmpdir/scmroot/dtkgui'...
$ git fetch origin 9fddad760f687671832c1015f42ca3efd7659308:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dtkgui
 * [new ref]         9fddad760f687671832c1015f42ca3efd7659308 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9fddad7 Libraw rebuild