$ git clone -n https://src.fedoraproject.org/rpms/ghc-cabal-file-th.git /var/lib/mock/f38-build-side-42-init-devel-711379-27246/root/chroot_tmpdir/scmroot/ghc-cabal-file-th
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-711379-27246/root/chroot_tmpdir/scmroot/ghc-cabal-file-th'...
$ git fetch origin 4116d27618de12a8623cf980fb06893bbee95a66:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cabal-file-th
 * [new ref]         4116d27618de12a8623cf980fb06893bbee95a66 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4116d27 Convert to %autorelease and %autochangelog