$ git clone -n https://src.fedoraproject.org/rpms/freecolor.git /var/lib/mock/f45-build-9213-400/root/chroot_tmpdir/scmroot/freecolor
Cloning into '/var/lib/mock/f45-build-9213-400/root/chroot_tmpdir/scmroot/freecolor'...
$ git fetch origin 25c53efd04af14971552f8c5886597f349e49aad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freecolor
 * [new ref]         25c53efd04af14971552f8c5886597f349e49aad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25c53ef Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild