$ git clone -n https://src.fedoraproject.org/rpms/ghc-xml-conduit.git /var/lib/mock/f39-build-1712907-41228/root/chroot_tmpdir/scmroot/ghc-xml-conduit
Cloning into '/var/lib/mock/f39-build-1712907-41228/root/chroot_tmpdir/scmroot/ghc-xml-conduit'...
$ git fetch origin cb600947f46c9037539c6f79620ae97e1e3d41ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-xml-conduit
 * [new ref]         cb600947f46c9037539c6f79620ae97e1e3d41ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb60094 https://hackage.haskell.org/package/xml-conduit-1.9.1.3/changelog