$ git clone -n https://src.fedoraproject.org/rpms/warmux.git /var/lib/mock/f45-build-38239-722/root/chroot_tmpdir/scmroot/warmux
Cloning into '/var/lib/mock/f45-build-38239-722/root/chroot_tmpdir/scmroot/warmux'...
$ git fetch origin 5b1bb58096c3b0490d438730b2b63de275b85e7d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/warmux
 * [new ref]         5b1bb58096c3b0490d438730b2b63de275b85e7d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b1bb58 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild