$ git clone -n https://src.fedoraproject.org/rpms/pappl.git /var/lib/mock/f45-build-21377-584/root/chroot_tmpdir/scmroot/pappl
Cloning into '/var/lib/mock/f45-build-21377-584/root/chroot_tmpdir/scmroot/pappl'...
$ git fetch origin 68aaeedd781b2558d42fc3b42a5edb02a6120d91:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pappl
 * [new ref]         68aaeedd781b2558d42fc3b42a5edb02a6120d91 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 68aaeed Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild