$ git clone -n https://src.fedoraproject.org/rpms/pappl.git /var/lib/mock/f40-build-2014530-45982/root/chroot_tmpdir/scmroot/pappl
Cloning into '/var/lib/mock/f40-build-2014530-45982/root/chroot_tmpdir/scmroot/pappl'...
$ git fetch origin 4b1dcc5ad6094d58fac295caa22e1552b691db09:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pappl
 * [new ref]         4b1dcc5ad6094d58fac295caa22e1552b691db09 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b1dcc5 rebase to version 1.4.2 (#2238033)