$ git clone -n https://src.fedoraproject.org/rpms/ghc-x509-store.git /var/lib/mock/f39-build-2098971-50438/root/chroot_tmpdir/scmroot/ghc-x509-store
Cloning into '/var/lib/mock/f39-build-2098971-50438/root/chroot_tmpdir/scmroot/ghc-x509-store'...
$ git fetch origin ad66fc522576aa1fbc4689671cbc7af56ae8c30c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-x509-store
 * [new ref]         ad66fc522576aa1fbc4689671cbc7af56ae8c30c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad66fc5 bump release