$ git clone -n https://src.fedoraproject.org/rpms/pappl.git /var/lib/mock/f42-build-side-1-3501277-45974/root/chroot_tmpdir/scmroot/pappl
Cloning into '/var/lib/mock/f42-build-side-1-3501277-45974/root/chroot_tmpdir/scmroot/pappl'...
$ git fetch origin 512e53c00813a629e63eb42afd8d7dc99960fa9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pappl
 * [new ref]         512e53c00813a629e63eb42afd8d7dc99960fa9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 512e53c 1.4.9 (fedora#2353963)