$ git clone -n https://src.fedoraproject.org/rpms/ghc-lzma-conduit.git /var/lib/mock/f39-build-1713199-41228/root/chroot_tmpdir/scmroot/ghc-lzma-conduit
Cloning into '/var/lib/mock/f39-build-1713199-41228/root/chroot_tmpdir/scmroot/ghc-lzma-conduit'...
$ git fetch origin c4b7a080adcd09171fee4d32ac2f1de7e6b8ce73:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-lzma-conduit
 * [new ref]         c4b7a080adcd09171fee4d32ac2f1de7e6b8ce73 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4b7a08 add changelog