$ git clone -n https://src.fedoraproject.org/rpms/graphite2.git /var/lib/mock/f45-build-12995-444/root/chroot_tmpdir/scmroot/graphite2
Cloning into '/var/lib/mock/f45-build-12995-444/root/chroot_tmpdir/scmroot/graphite2'...
$ git fetch origin 3697c751ad9dd237ca7c9040baed7cf6fc728fd7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/graphite2
 * [new ref]         3697c751ad9dd237ca7c9040baed7cf6fc728fd7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3697c75 Set CMAKE_POLICY_VERSION_MINIMUM to 3.5 which fixes rawhide FTBFS