$ git clone -n https://src.fedoraproject.org/rpms/ghc-attoparsec-binary.git /var/lib/mock/f40-build-2185088-51289/root/chroot_tmpdir/scmroot/ghc-attoparsec-binary
Cloning into '/var/lib/mock/f40-build-2185088-51289/root/chroot_tmpdir/scmroot/ghc-attoparsec-binary'...
$ git fetch origin 1c8faccf82438d8b583b4666487baf9642ca239f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-attoparsec-binary
 * [new ref]         1c8faccf82438d8b583b4666487baf9642ca239f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c8facc bump release