$ git clone -n https://src.fedoraproject.org/rpms/free42.git /var/lib/mock/f40-build-2292258-56116/root/chroot_tmpdir/scmroot/free42
Cloning into '/var/lib/mock/f40-build-2292258-56116/root/chroot_tmpdir/scmroot/free42'...
$ git fetch origin f5854d0cd24bb67a9b1e682e9ba0e6b933e9824f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/free42
 * [new ref]         f5854d0cd24bb67a9b1e682e9ba0e6b933e9824f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5854d0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild