$ git clone -n https://src.fedoraproject.org/rpms/ghc-html.git /var/lib/mock/f38-build-side-42-init-devel-856757-28426/root/chroot_tmpdir/scmroot/ghc-html
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-856757-28426/root/chroot_tmpdir/scmroot/ghc-html'...
$ git fetch origin f388ea529d6a20ff2011616cf8e487dff95a246f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-html
 * [new ref]         f388ea529d6a20ff2011616cf8e487dff95a246f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f388ea5 Convert to %autorelease and %autochangelog