$ git clone -n https://src.fedoraproject.org/rpms/rust-wait-timeout.git /var/lib/mock/f45-build-46127-831/root/chroot_tmpdir/scmroot/rust-wait-timeout
Cloning into '/var/lib/mock/f45-build-46127-831/root/chroot_tmpdir/scmroot/rust-wait-timeout'...
$ git fetch origin 1971b070b1b7781490af12dfd2be0c1e0014f7fe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-wait-timeout
 * [new ref]         1971b070b1b7781490af12dfd2be0c1e0014f7fe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1971b07 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild