$ git clone -n https://src.fedoraproject.org/rpms/gpodder.git /var/lib/mock/f45-build-12948-444/root/chroot_tmpdir/scmroot/gpodder
Cloning into '/var/lib/mock/f45-build-12948-444/root/chroot_tmpdir/scmroot/gpodder'...
$ git fetch origin 58ffcbd461d53733760788341a3b0cb613b836d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gpodder
 * [new ref]         58ffcbd461d53733760788341a3b0cb613b836d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58ffcbd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild