$ git clone -n https://src.fedoraproject.org/rpms/perl-Data-AMF.git /var/lib/mock/f45-build-22851-594/root/chroot_tmpdir/scmroot/perl-Data-AMF
Cloning into '/var/lib/mock/f45-build-22851-594/root/chroot_tmpdir/scmroot/perl-Data-AMF'...
$ git fetch origin 692bf6e75280146b3df136a2ac035a630e2e4ef3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Data-AMF
 * [new ref]         692bf6e75280146b3df136a2ac035a630e2e4ef3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 692bf6e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild