$ git clone -n https://src.fedoraproject.org/rpms/libretro-bsnes-mercury.git /var/lib/mock/f40-build-2702459-70647/root/chroot_tmpdir/scmroot/libretro-bsnes-mercury
Cloning into '/var/lib/mock/f40-build-2702459-70647/root/chroot_tmpdir/scmroot/libretro-bsnes-mercury'...
$ git fetch origin 4d8e49c12de28471811fec825ad3dceabf89fb30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libretro-bsnes-mercury
 * [new ref]         4d8e49c12de28471811fec825ad3dceabf89fb30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d8e49c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild