$ git clone -n https://src.fedoraproject.org/rpms/kdiff3.git /var/lib/mock/f40-build-2601359-63189/root/chroot_tmpdir/scmroot/kdiff3
Cloning into '/var/lib/mock/f40-build-2601359-63189/root/chroot_tmpdir/scmroot/kdiff3'...
$ git fetch origin b0060d6121ef21ef0a5463cc770fe41f1c2b95eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdiff3
 * [new ref]         b0060d6121ef21ef0a5463cc770fe41f1c2b95eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0060d6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild