$ git clone -n https://src.fedoraproject.org/rpms/libskk.git /var/lib/mock/f41-build-1697973-24523/root/chroot_tmpdir/scmroot/libskk
Cloning into '/var/lib/mock/f41-build-1697973-24523/root/chroot_tmpdir/scmroot/libskk'...
$ git fetch origin b20fce152664ce8937c9b5ebbe5420c7340aa4de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libskk
 * [new ref]         b20fce152664ce8937c9b5ebbe5420c7340aa4de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b20fce1 convert GPLv3+ license to SPDX