$ git clone -n https://src.fedoraproject.org/rpms/gimp-lensfun.git /var/lib/mock/f41-build-815462-149534/root/chroot_tmpdir/scmroot/gimp-lensfun
Cloning into '/var/lib/mock/f41-build-815462-149534/root/chroot_tmpdir/scmroot/gimp-lensfun'...
$ git fetch origin 11b7cdc056bce0efd3cc175a4010724e857a94fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gimp-lensfun
 * [new ref]         11b7cdc056bce0efd3cc175a4010724e857a94fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11b7cdc Use prerelease that works with gexiv2