$ git clone -n https://src.fedoraproject.org/rpms/ghc-pango.git /var/lib/mock/f40-build-2158588-50939/root/chroot_tmpdir/scmroot/ghc-pango
Cloning into '/var/lib/mock/f40-build-2158588-50939/root/chroot_tmpdir/scmroot/ghc-pango'...
$ git fetch origin 8ee3da94f34a82bc533e42d6ac42bb36a6beb8b1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pango
 * [new ref]         8ee3da94f34a82bc533e42d6ac42bb36a6beb8b1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ee3da9 https://hackage.haskell.org/package/pango-0.13.10.0/changelog