$ git clone -n https://src.fedoraproject.org/rpms/gimpfx-foundry.git /var/lib/mock/f45-build-11056-426/root/chroot_tmpdir/scmroot/gimpfx-foundry
Cloning into '/var/lib/mock/f45-build-11056-426/root/chroot_tmpdir/scmroot/gimpfx-foundry'...
$ git fetch origin e5ca06fb10ae667f5d825146282197648189ab3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gimpfx-foundry
 * [new ref]         e5ca06fb10ae667f5d825146282197648189ab3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5ca06f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild