$ git clone -n https://src.fedoraproject.org/rpms/ghc-aeson-compat.git /var/lib/mock/f38-build-side-42-init-devel-831432-28369/root/chroot_tmpdir/scmroot/ghc-aeson-compat
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-831432-28369/root/chroot_tmpdir/scmroot/ghc-aeson-compat'...
$ git fetch origin f53bb62b9ebd42e89901fdcfc304ff22b539bfe8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-aeson-compat
 * [new ref]         f53bb62b9ebd42e89901fdcfc304ff22b539bfe8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f53bb62 Convert to %autorelease and %autochangelog