$ git clone -n https://src.fedoraproject.org/rpms/ghc-x509.git /var/lib/mock/f39-build-1711798-41228/root/chroot_tmpdir/scmroot/ghc-x509
Cloning into '/var/lib/mock/f39-build-1711798-41228/root/chroot_tmpdir/scmroot/ghc-x509'...
$ git fetch origin 0143479e81993014ef4f53211a2b09451f757a42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-x509
 * [new ref]         0143479e81993014ef4f53211a2b09451f757a42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0143479 bump release