$ git clone -n https://src.fedoraproject.org/rpms/mirrorlist-server.git /var/lib/mock/f40-build-2481048-61629/root/chroot_tmpdir/scmroot/mirrorlist-server
Cloning into '/var/lib/mock/f40-build-2481048-61629/root/chroot_tmpdir/scmroot/mirrorlist-server'...
$ git fetch origin 3eff299b518ccd58bcd7bff9390f22c216fa4871:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mirrorlist-server
 * [new ref]         3eff299b518ccd58bcd7bff9390f22c216fa4871 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3eff299 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild