$ git clone -n https://src.fedoraproject.org/rpms/ghc-bencode.git /var/lib/mock/f38-build-side-42-init-devel-682014-26742/root/chroot_tmpdir/scmroot/ghc-bencode
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-682014-26742/root/chroot_tmpdir/scmroot/ghc-bencode'...
$ git fetch origin fc43c00332f15077490e2c79bb4c514d831cc445:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-bencode
 * [new ref]         fc43c00332f15077490e2c79bb4c514d831cc445 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc43c00 Convert to %autorelease and %autochangelog