$ git clone -n https://src.fedoraproject.org/rpms/mozilla-https-everywhere.git /var/lib/mock/f45-build-19161-542/root/chroot_tmpdir/scmroot/mozilla-https-everywhere
Cloning into '/var/lib/mock/f45-build-19161-542/root/chroot_tmpdir/scmroot/mozilla-https-everywhere'...
$ git fetch origin f3f8ba1911b589abd94f085d2da71e766c42eb8a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mozilla-https-everywhere
 * [new ref]         f3f8ba1911b589abd94f085d2da71e766c42eb8a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3f8ba1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild