$ git clone -n https://src.fedoraproject.org/rpms/ghc-warp-tls.git /var/lib/mock/f38-build-side-42-init-devel-1040696-29757/root/chroot_tmpdir/scmroot/ghc-warp-tls
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1040696-29757/root/chroot_tmpdir/scmroot/ghc-warp-tls'...
$ git fetch origin 5973dc8099ea8001390b956edaf4ef8043605bc2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-warp-tls
 * [new ref]         5973dc8099ea8001390b956edaf4ef8043605bc2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5973dc8 Convert to %autorelease and %autochangelog