$ git clone -n https://src.fedoraproject.org/rpms/mass3.git /var/lib/mock/f40-build-2096824-50418/root/chroot_tmpdir/scmroot/mass3
Cloning into '/var/lib/mock/f40-build-2096824-50418/root/chroot_tmpdir/scmroot/mass3'...
$ git fetch origin 056a80cb354fc92f9878099d5c5d70483f5b887b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mass3
 * [new ref]         056a80cb354fc92f9878099d5c5d70483f5b887b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 056a80c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild