$ git clone -n https://src.fedoraproject.org/rpms/freeDiameter.git /var/lib/mock/f45-build-9206-400/root/chroot_tmpdir/scmroot/freeDiameter
Cloning into '/var/lib/mock/f45-build-9206-400/root/chroot_tmpdir/scmroot/freeDiameter'...
$ git fetch origin 7e3535a4ae76c210c4a1059b5437d612603d59b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freeDiameter
 * [new ref]         7e3535a4ae76c210c4a1059b5437d612603d59b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e3535a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild