$ git clone -n https://src.fedoraproject.org/rpms/wlcs.git /var/lib/mock/f45-build-38419-724/root/chroot_tmpdir/scmroot/wlcs
Cloning into '/var/lib/mock/f45-build-38419-724/root/chroot_tmpdir/scmroot/wlcs'...
$ git fetch origin 8d3af92bb180ed113ff986e27ab7b6e6d57d749b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wlcs
 * [new ref]         8d3af92bb180ed113ff986e27ab7b6e6d57d749b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d3af92 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild