$ git clone -n https://src.fedoraproject.org/rpms/libretro-bsnes-mercury.git /var/lib/mock/f40-build-2295113-56312/root/chroot_tmpdir/scmroot/libretro-bsnes-mercury
Cloning into '/var/lib/mock/f40-build-2295113-56312/root/chroot_tmpdir/scmroot/libretro-bsnes-mercury'...
$ git fetch origin a618eca6c578d35ad4dae7eed45b6aa0e3d4e230:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libretro-bsnes-mercury
 * [new ref]         a618eca6c578d35ad4dae7eed45b6aa0e3d4e230 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a618eca Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild