$ git clone -n https://src.fedoraproject.org/rpms/xcursorgen.git /var/lib/mock/f45-build-38669-727/root/chroot_tmpdir/scmroot/xcursorgen
Cloning into '/var/lib/mock/f45-build-38669-727/root/chroot_tmpdir/scmroot/xcursorgen'...
$ git fetch origin c40144d73c9d5db749e01dc2097d896f81de8d75:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xcursorgen
 * [new ref]         c40144d73c9d5db749e01dc2097d896f81de8d75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c40144d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild