$ git clone -n https://src.fedoraproject.org/rpms/rust-humantime-serde.git /var/lib/mock/f40-build-2037187-48082/root/chroot_tmpdir/scmroot/rust-humantime-serde
Cloning into '/var/lib/mock/f40-build-2037187-48082/root/chroot_tmpdir/scmroot/rust-humantime-serde'...
$ git fetch origin 3277851205bd2a2d385e8bfc45ddaf9a32cd3a0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-humantime-serde
 * [new ref]         3277851205bd2a2d385e8bfc45ddaf9a32cd3a0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3277851 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild