$ git clone -n https://src.fedoraproject.org/rpms/mpdecimal.git /var/lib/mock/f40-build-786663-134489/root/chroot_tmpdir/scmroot/mpdecimal
Cloning into '/var/lib/mock/f40-build-786663-134489/root/chroot_tmpdir/scmroot/mpdecimal'...
$ git fetch origin 0971d96a2a13b5771579c45c522700eef08370e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mpdecimal
 * [new ref]         0971d96a2a13b5771579c45c522700eef08370e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0971d96 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild