$ git clone -n https://src.fedoraproject.org/rpms/ghc-dbus.git /var/lib/mock/f39-build-1930103-43102/root/chroot_tmpdir/scmroot/ghc-dbus
Cloning into '/var/lib/mock/f39-build-1930103-43102/root/chroot_tmpdir/scmroot/ghc-dbus'...
$ git fetch origin 3094b418c9789ddf79495079192e5117e94dd047:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-dbus
 * [new ref]         3094b418c9789ddf79495079192e5117e94dd047 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3094b41 https://hackage.haskell.org/package/dbus-1.2.29/changelog