$ git clone -n https://src.fedoraproject.org/rpms/ghc-distributive.git /var/lib/mock/f38-build-side-42-init-devel-1020533-29635/root/chroot_tmpdir/scmroot/ghc-distributive
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1020533-29635/root/chroot_tmpdir/scmroot/ghc-distributive'...
$ git fetch origin 8f551765940d8544f7367b0f2f9b0b9063bc74ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-distributive
 * [new ref]         8f551765940d8544f7367b0f2f9b0b9063bc74ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f55176 Convert to %autorelease and %autochangelog