$ git clone -n https://src.fedoraproject.org/rpms/python-idna.git /var/lib/mock/f45-build-31046-649/root/chroot_tmpdir/scmroot/python-idna
Cloning into '/var/lib/mock/f45-build-31046-649/root/chroot_tmpdir/scmroot/python-idna'...
$ git fetch origin ac5737d7b91be1d35f6674949553224c0915b5ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-idna
 * [new ref]         ac5737d7b91be1d35f6674949553224c0915b5ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac5737d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild