$ git clone -n https://src.fedoraproject.org/rpms/ghc-Decimal.git /var/lib/mock/f45-build-9890-411/root/chroot_tmpdir/scmroot/ghc-Decimal
Cloning into '/var/lib/mock/f45-build-9890-411/root/chroot_tmpdir/scmroot/ghc-Decimal'...
$ git fetch origin b67bf20a15f3f42b39b6cc2dcc5525c59aa9b27e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-Decimal
 * [new ref]         b67bf20a15f3f42b39b6cc2dcc5525c59aa9b27e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b67bf20 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild