$ git clone -n https://src.fedoraproject.org/rpms/kf6-kiconthemes.git /var/lib/mock/f41-build-860854-169221/root/chroot_tmpdir/scmroot/kf6-kiconthemes
Cloning into '/var/lib/mock/f41-build-860854-169221/root/chroot_tmpdir/scmroot/kf6-kiconthemes'...
$ git fetch origin cdf267cfdf1718dc25f9ab1d8cb39d1a8c77493a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kiconthemes
 * [new ref]         cdf267cfdf1718dc25f9ab1d8cb39d1a8c77493a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cdf267c Merge branch 'rawhide' into f40