$ git clone -n https://src.fedoraproject.org/rpms/perl-Scalar-Properties.git /var/lib/mock/f45-build-26164-616/root/chroot_tmpdir/scmroot/perl-Scalar-Properties
Cloning into '/var/lib/mock/f45-build-26164-616/root/chroot_tmpdir/scmroot/perl-Scalar-Properties'...
$ git fetch origin b0630c13569248859fc2f1288bcc28856e47f1a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Scalar-Properties
 * [new ref]         b0630c13569248859fc2f1288bcc28856e47f1a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0630c1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild