$ git clone -n https://src.fedoraproject.org/rpms/ghc-hjsmin.git /var/lib/mock/f38-build-side-42-init-devel-1059459-29765/root/chroot_tmpdir/scmroot/ghc-hjsmin
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1059459-29765/root/chroot_tmpdir/scmroot/ghc-hjsmin'...
$ git fetch origin a3d2aaeb720f9c0ec4b6e93676badf7a3a76e6f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-hjsmin
 * [new ref]         a3d2aaeb720f9c0ec4b6e93676badf7a3a76e6f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3d2aae Convert to %autorelease and %autochangelog