$ git clone -n https://src.fedoraproject.org/rpms/ghc-stringsearch.git /var/lib/mock/f38-build-side-42-init-devel-979324-29007/root/chroot_tmpdir/scmroot/ghc-stringsearch
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-979324-29007/root/chroot_tmpdir/scmroot/ghc-stringsearch'...
$ git fetch origin 37c192ac53b872464f97ac09db7cfd8a40d5f7d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-stringsearch
 * [new ref]         37c192ac53b872464f97ac09db7cfd8a40d5f7d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 37c192a Convert to %autorelease and %autochangelog