$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-CheckBin.git /var/lib/mock/f45-build-23075-595/root/chroot_tmpdir/scmroot/perl-Devel-CheckBin
Cloning into '/var/lib/mock/f45-build-23075-595/root/chroot_tmpdir/scmroot/perl-Devel-CheckBin'...
$ git fetch origin 817f378cf54f164deb8fd0310e02b9c96f317a37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-CheckBin
 * [new ref]         817f378cf54f164deb8fd0310e02b9c96f317a37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 817f378 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild