$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-CAST5_PP.git /var/lib/mock/f45-build-22560-593/root/chroot_tmpdir/scmroot/perl-Crypt-CAST5_PP
Cloning into '/var/lib/mock/f45-build-22560-593/root/chroot_tmpdir/scmroot/perl-Crypt-CAST5_PP'...
$ git fetch origin b108f287bcb8a88394c71fcab126da9e970e4516:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-CAST5_PP
 * [new ref]         b108f287bcb8a88394c71fcab126da9e970e4516 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b108f28 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild