$ git clone -n https://src.fedoraproject.org/rpms/python-btchip.git /var/lib/mock/f45-build-29852-641/root/chroot_tmpdir/scmroot/python-btchip
Cloning into '/var/lib/mock/f45-build-29852-641/root/chroot_tmpdir/scmroot/python-btchip'...
$ git fetch origin 21d1035cce036da3f22a326f022c05e3b58f9acd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-btchip
 * [new ref]         21d1035cce036da3f22a326f022c05e3b58f9acd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21d1035 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild