$ git clone -n https://src.fedoraproject.org/rpms/mingw-mediawriter.git /var/lib/mock/f38-build-side-42-init-devel-834210-28378/root/chroot_tmpdir/scmroot/mingw-mediawriter
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-834210-28378/root/chroot_tmpdir/scmroot/mingw-mediawriter'...
$ git fetch origin ad47b3d8bd7de22835a467001450547663e2a878:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-mediawriter
 * [new ref]         ad47b3d8bd7de22835a467001450547663e2a878 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad47b3d 5.0.6