$ git clone -n https://src.fedoraproject.org/rpms/kf5-kunitconversion.git /var/lib/mock/f40-build-1789300-24852/root/chroot_tmpdir/scmroot/kf5-kunitconversion
Cloning into '/var/lib/mock/f40-build-1789300-24852/root/chroot_tmpdir/scmroot/kf5-kunitconversion'...
$ git fetch origin 363f8c3e3347d4fa85d95954c5d7719a13f90d06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kunitconversion
 * [new ref]         363f8c3e3347d4fa85d95954c5d7719a13f90d06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 363f8c3 5.116.0