$ git clone -n https://src.fedoraproject.org/rpms/ghc-readline.git /var/lib/mock/f38-build-side-42-init-devel-682677-26745/root/chroot_tmpdir/scmroot/ghc-readline
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-682677-26745/root/chroot_tmpdir/scmroot/ghc-readline'...
$ git fetch origin 30dbbb03d735f81ef94761c3ea6805c208460a13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-readline
 * [new ref]         30dbbb03d735f81ef94761c3ea6805c208460a13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30dbbb0 Convert to %autorelease and %autochangelog