$ git clone -n https://src.fedoraproject.org/rpms/ghc-bsb-http-chunked.git /var/lib/mock/f38-build-side-42-init-devel-889054-28525/root/chroot_tmpdir/scmroot/ghc-bsb-http-chunked
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-889054-28525/root/chroot_tmpdir/scmroot/ghc-bsb-http-chunked'...
$ git fetch origin 6e8f0cbd30f68bfe785a4655b6de5cd124cabebf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-bsb-http-chunked
 * [new ref]         6e8f0cbd30f68bfe785a4655b6de5cd124cabebf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e8f0cb Convert to %autorelease and %autochangelog