$ git clone -n https://src.fedoraproject.org/rpms/mctc-lib.git /var/lib/mock/f40-build-2297107-56440/root/chroot_tmpdir/scmroot/mctc-lib
Cloning into '/var/lib/mock/f40-build-2297107-56440/root/chroot_tmpdir/scmroot/mctc-lib'...
$ git fetch origin 9d69b1b624084ae10971cfe3ad1f2dd8b2fd6d11:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mctc-lib
 * [new ref]         9d69b1b624084ae10971cfe3ad1f2dd8b2fd6d11 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d69b1b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild