$ git clone -n https://src.fedoraproject.org/rpms/rust-secrecy.git /var/lib/mock/f45-build-44743-816/root/chroot_tmpdir/scmroot/rust-secrecy
Cloning into '/var/lib/mock/f45-build-44743-816/root/chroot_tmpdir/scmroot/rust-secrecy'...
$ git fetch origin a53d435f376f378b7e3773dae64a0d47eba84332:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-secrecy
 * [new ref]         a53d435f376f378b7e3773dae64a0d47eba84332 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a53d435 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild