$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-CheckOS.git /var/lib/mock/f45-build-23070-595/root/chroot_tmpdir/scmroot/perl-Devel-CheckOS
Cloning into '/var/lib/mock/f45-build-23070-595/root/chroot_tmpdir/scmroot/perl-Devel-CheckOS'...
$ git fetch origin 6692af6aefa6930bcb47a3a0934080a1281d3e27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-CheckOS
 * [new ref]         6692af6aefa6930bcb47a3a0934080a1281d3e27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6692af6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild