$ git clone -n https://src.fedoraproject.org/rpms/rust-datetime.git /var/lib/mock/f39-build-1466366-33665/root/chroot_tmpdir/scmroot/rust-datetime
Cloning into '/var/lib/mock/f39-build-1466366-33665/root/chroot_tmpdir/scmroot/rust-datetime'...
$ git fetch origin ad4fe83f568e1be5cd2d16f5cfeb3c9f596ad3d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-datetime
 * [new ref]         ad4fe83f568e1be5cd2d16f5cfeb3c9f596ad3d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad4fe83 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild