$ git clone -n https://src.fedoraproject.org/rpms/folly-rpm-macros.git /var/lib/mock/f40-build-2590168-62603/root/chroot_tmpdir/scmroot/folly-rpm-macros
Cloning into '/var/lib/mock/f40-build-2590168-62603/root/chroot_tmpdir/scmroot/folly-rpm-macros'...
$ git fetch origin 77015a72a8ec994fbea95e3b06efbe0ade0d416b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/folly-rpm-macros
 * [new ref]         77015a72a8ec994fbea95e3b06efbe0ade0d416b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77015a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild