$ git clone -n https://src.fedoraproject.org/rpms/ghc-securemem.git /var/lib/mock/f45-build-10706-421/root/chroot_tmpdir/scmroot/ghc-securemem
Cloning into '/var/lib/mock/f45-build-10706-421/root/chroot_tmpdir/scmroot/ghc-securemem'...
$ git fetch origin cfc7d47de4e3afbf236d0109050962b7fbaf1577:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-securemem
 * [new ref]         cfc7d47de4e3afbf236d0109050962b7fbaf1577 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cfc7d47 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild