$ git clone -n https://src.fedoraproject.org/rpms/papi.git /var/lib/mock/f45-build-21366-584/root/chroot_tmpdir/scmroot/papi
Cloning into '/var/lib/mock/f45-build-21366-584/root/chroot_tmpdir/scmroot/papi'...
$ git fetch origin 168e42eb8fd9b6bc299c5cbe97e8530801677d27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/papi
 * [new ref]         168e42eb8fd9b6bc299c5cbe97e8530801677d27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 168e42e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild