$ git clone -n https://src.fedoraproject.org/rpms/ghc-distributive.git /var/lib/mock/f39-build-1929815-43095/root/chroot_tmpdir/scmroot/ghc-distributive
Cloning into '/var/lib/mock/f39-build-1929815-43095/root/chroot_tmpdir/scmroot/ghc-distributive'...
$ git fetch origin be7edbf6ed4a9c524b275e7a8ab1a00239692784:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-distributive
 * [new ref]         be7edbf6ed4a9c524b275e7a8ab1a00239692784 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be7edbf bump release