$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-C3-Adopt-NEXT.git /var/lib/mock/f45-build-22320-590/root/chroot_tmpdir/scmroot/perl-Class-C3-Adopt-NEXT
Cloning into '/var/lib/mock/f45-build-22320-590/root/chroot_tmpdir/scmroot/perl-Class-C3-Adopt-NEXT'...
$ git fetch origin f75bec8b484677cd5b31383c694d6f4a0742bcf2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-C3-Adopt-NEXT
 * [new ref]         f75bec8b484677cd5b31383c694d6f4a0742bcf2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f75bec8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild