$ git clone -n https://src.fedoraproject.org/rpms/pinfo.git /var/lib/mock/f45-build-28522-631/root/chroot_tmpdir/scmroot/pinfo
Cloning into '/var/lib/mock/f45-build-28522-631/root/chroot_tmpdir/scmroot/pinfo'...
$ git fetch origin e6206a311d22b2a00eea33ad52a046474d393298:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pinfo
 * [new ref]         e6206a311d22b2a00eea33ad52a046474d393298 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6206a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild