$ git clone -n https://src.fedoraproject.org/rpms/perl-Library-CallNumber-LC.git /var/lib/mock/f45-build-24395-603/root/chroot_tmpdir/scmroot/perl-Library-CallNumber-LC
Cloning into '/var/lib/mock/f45-build-24395-603/root/chroot_tmpdir/scmroot/perl-Library-CallNumber-LC'...
$ git fetch origin 86d33881d1049902a0de9e4e25d7ba083d9bee7f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Library-CallNumber-LC
 * [new ref]         86d33881d1049902a0de9e4e25d7ba083d9bee7f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86d3388 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild