$ git clone -n https://src.fedoraproject.org/rpms/xfce4-dict.git /var/lib/mock/f41-build-side-1-2826613-33435/root/chroot_tmpdir/scmroot/xfce4-dict
Cloning into '/var/lib/mock/f41-build-side-1-2826613-33435/root/chroot_tmpdir/scmroot/xfce4-dict'...
$ git fetch origin 25d58088b92164453dbdf50d62f201fe59ec5dd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-dict
 * [new ref]         25d58088b92164453dbdf50d62f201fe59ec5dd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25d5808 update to v0.8.7