$ git clone -n https://src.fedoraproject.org/rpms/ghc-blaze-html.git /var/lib/mock/f38-build-side-42-init-devel-884500-28488/root/chroot_tmpdir/scmroot/ghc-blaze-html
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-884500-28488/root/chroot_tmpdir/scmroot/ghc-blaze-html'...
$ git fetch origin 102e50f7c2e93c7ebd9dcc808f588dac389d13fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-blaze-html
 * [new ref]         102e50f7c2e93c7ebd9dcc808f588dac389d13fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 102e50f Convert to %autorelease and %autochangelog