$ git clone -n https://src.fedoraproject.org/rpms/python-diagnostic.git /var/lib/mock/f45-build-30314-644/root/chroot_tmpdir/scmroot/python-diagnostic
Cloning into '/var/lib/mock/f45-build-30314-644/root/chroot_tmpdir/scmroot/python-diagnostic'...
$ git fetch origin 0cb1fc41aea0deb92238abfac9de355969c4d6e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-diagnostic
 * [new ref]         0cb1fc41aea0deb92238abfac9de355969c4d6e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0cb1fc4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild