$ git clone -n https://src.fedoraproject.org/rpms/rust-cfg-if.git /var/lib/mock/f40-build-2650934-66878/root/chroot_tmpdir/scmroot/rust-cfg-if
Cloning into '/var/lib/mock/f40-build-2650934-66878/root/chroot_tmpdir/scmroot/rust-cfg-if'...
$ git fetch origin 71777c752c8377510e87ccc3072727b66222b4ae:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cfg-if
 * [new ref]         71777c752c8377510e87ccc3072727b66222b4ae -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71777c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild