$ git clone -n https://src.fedoraproject.org/rpms/ghc-IntervalMap.git /var/lib/mock/f45-build-9913-411/root/chroot_tmpdir/scmroot/ghc-IntervalMap
Cloning into '/var/lib/mock/f45-build-9913-411/root/chroot_tmpdir/scmroot/ghc-IntervalMap'...
$ git fetch origin f1c55ba3401cd6c31f26ab436147e401b5279b6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-IntervalMap
 * [new ref]         f1c55ba3401cd6c31f26ab436147e401b5279b6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f1c55ba Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild