$ git clone -n https://src.fedoraproject.org/rpms/kernelshark.git /var/lib/mock/f39-build-1591409-38286/root/chroot_tmpdir/scmroot/kernelshark
Cloning into '/var/lib/mock/f39-build-1591409-38286/root/chroot_tmpdir/scmroot/kernelshark'...
$ git fetch origin 8158824994e5ed309e3af538ea0c83f22df2f20e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kernelshark
 * [new ref]         8158824994e5ed309e3af538ea0c83f22df2f20e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8158824 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild