$ git clone -n https://src.fedoraproject.org/rpms/rust-predicates.git /var/lib/mock/f45-build-43991-809/root/chroot_tmpdir/scmroot/rust-predicates
Cloning into '/var/lib/mock/f45-build-43991-809/root/chroot_tmpdir/scmroot/rust-predicates'...
$ git fetch origin 45a8bebfb79d95274cb2041de605486bd11bcc9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-predicates
 * [new ref]         45a8bebfb79d95274cb2041de605486bd11bcc9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45a8beb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild