$ git clone -n https://src.fedoraproject.org/rpms/obserware.git /var/lib/mock/f42-build-side-1-3504977-45986/root/chroot_tmpdir/scmroot/obserware
Cloning into '/var/lib/mock/f42-build-side-1-3504977-45986/root/chroot_tmpdir/scmroot/obserware'...
$ git fetch origin 34ba50308b8884a8ee1adf8f5f4bee4066da2ed7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obserware
 * [new ref]         34ba50308b8884a8ee1adf8f5f4bee4066da2ed7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34ba503 Remove the unnecessary patch