$ git clone -n https://src.fedoraproject.org/rpms/qwt5.git /var/lib/mock/f41-build-746164-13352/root/chroot_tmpdir/scmroot/qwt5
Cloning into '/var/lib/mock/f41-build-746164-13352/root/chroot_tmpdir/scmroot/qwt5'...
$ git fetch origin b688775623ba4101e6c7a4384f1a3598577bd092:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qwt5
 * [new ref]         b688775623ba4101e6c7a4384f1a3598577bd092 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b688775 Eliminate use of obsolete %patchN syntax (#2283636)