$ git clone -n https://src.fedoraproject.org/rpms/crosswords.git /var/lib/mock/f45-build-7098-357/root/chroot_tmpdir/scmroot/crosswords
Cloning into '/var/lib/mock/f45-build-7098-357/root/chroot_tmpdir/scmroot/crosswords'...
$ git fetch origin 34d91c98eb1b7adb14cfd5e7fb61e27a083d3c4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crosswords
 * [new ref]         34d91c98eb1b7adb14cfd5e7fb61e27a083d3c4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34d91c9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild