$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-Simple.git /var/lib/mock/f45-build-22657-593/root/chroot_tmpdir/scmroot/perl-Crypt-Simple
Cloning into '/var/lib/mock/f45-build-22657-593/root/chroot_tmpdir/scmroot/perl-Crypt-Simple'...
$ git fetch origin fc9c2ecf5946b6ea03d9af8cfc2e2028eff6beda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-Simple
 * [new ref]         fc9c2ecf5946b6ea03d9af8cfc2e2028eff6beda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc9c2ec Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild