$ git clone -n https://src.fedoraproject.org/rpms/rust-spytools.git /var/lib/mock/f45-build-45165-821/root/chroot_tmpdir/scmroot/rust-spytools
Cloning into '/var/lib/mock/f45-build-45165-821/root/chroot_tmpdir/scmroot/rust-spytools'...
$ git fetch origin 45c86e5b51ad0e68441aec55d45c973d4b6ad8d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-spytools
 * [new ref]         45c86e5b51ad0e68441aec55d45c973d4b6ad8d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45c86e5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild