$ git clone -n https://src.fedoraproject.org/rpms/libXv.git /var/lib/mock/f40-build-785492-133957/root/chroot_tmpdir/scmroot/libXv
Cloning into '/var/lib/mock/f40-build-785492-133957/root/chroot_tmpdir/scmroot/libXv'...
$ git fetch origin aa78ed1754a89fd2772287279fc0c53e708de8e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libXv
 * [new ref]         aa78ed1754a89fd2772287279fc0c53e708de8e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa78ed1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild