$ git clone -n https://src.fedoraproject.org/rpms/ghc-hxt-unicode.git /var/lib/mock/f38-build-side-42-init-devel-890608-28533/root/chroot_tmpdir/scmroot/ghc-hxt-unicode
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-890608-28533/root/chroot_tmpdir/scmroot/ghc-hxt-unicode'...
$ git fetch origin 8ae6cfbf1efbe945c91bbb6844e584d648fcc293:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-hxt-unicode
 * [new ref]         8ae6cfbf1efbe945c91bbb6844e584d648fcc293 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ae6cfb Convert to %autorelease and %autochangelog