$ git clone -n https://src.fedoraproject.org/rpms/git-repair.git /var/lib/mock/f40-build-2688951-68100/root/chroot_tmpdir/scmroot/git-repair
Cloning into '/var/lib/mock/f40-build-2688951-68100/root/chroot_tmpdir/scmroot/git-repair'...
$ git fetch origin 863195ab72e883ba8f34e8e3a486133e53e7fe65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-repair
 * [new ref]         863195ab72e883ba8f34e8e3a486133e53e7fe65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 863195a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild