$ git clone -n https://src.fedoraproject.org/rpms/flamp.git /var/lib/mock/f45-build-9017-397/root/chroot_tmpdir/scmroot/flamp
Cloning into '/var/lib/mock/f45-build-9017-397/root/chroot_tmpdir/scmroot/flamp'...
$ git fetch origin f38328a6d0f0f249bcbdf714149de6fb715d96fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flamp
 * [new ref]         f38328a6d0f0f249bcbdf714149de6fb715d96fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f38328a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild