$ git clone -n https://src.fedoraproject.org/rpms/perl-YAML-Parser.git /var/lib/mock/f45-build-27602-625/root/chroot_tmpdir/scmroot/perl-YAML-Parser
Cloning into '/var/lib/mock/f45-build-27602-625/root/chroot_tmpdir/scmroot/perl-YAML-Parser'...
$ git fetch origin a51bb104bd8acadc1b4dd00d5c80786bbb360e9f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-YAML-Parser
 * [new ref]         a51bb104bd8acadc1b4dd00d5c80786bbb360e9f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a51bb10 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild