$ git clone -n https://src.fedoraproject.org/rpms/wcstools.git /var/lib/mock/f45-build-38297-723/root/chroot_tmpdir/scmroot/wcstools
Cloning into '/var/lib/mock/f45-build-38297-723/root/chroot_tmpdir/scmroot/wcstools'...
$ git fetch origin 39a7d0a67c26023d66196b3fc1e2541901fac824:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wcstools
 * [new ref]         39a7d0a67c26023d66196b3fc1e2541901fac824 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 39a7d0a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild