$ git clone -n https://src.fedoraproject.org/rpms/python-feedgenerator.git /var/lib/mock/f45-build-30671-647/root/chroot_tmpdir/scmroot/python-feedgenerator
Cloning into '/var/lib/mock/f45-build-30671-647/root/chroot_tmpdir/scmroot/python-feedgenerator'...
$ git fetch origin fbc5d823b51157d41ffc497696a9053b889b95f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-feedgenerator
 * [new ref]         fbc5d823b51157d41ffc497696a9053b889b95f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbc5d82 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild