$ git clone -n https://src.fedoraproject.org/rpms/ghc-simple-cmd.git /var/lib/mock/f38-build-side-42-init-devel-727718-27336/root/chroot_tmpdir/scmroot/ghc-simple-cmd
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-727718-27336/root/chroot_tmpdir/scmroot/ghc-simple-cmd'...
$ git fetch origin 75be41256588e74f84685f136c7f4b4cadd4a4de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-simple-cmd
 * [new ref]         75be41256588e74f84685f136c7f4b4cadd4a4de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75be412 Convert to %autorelease and %autochangelog