$ git clone -n https://src.fedoraproject.org/rpms/rust-cpython.git /var/lib/mock/f40-build-2189992-51418/root/chroot_tmpdir/scmroot/rust-cpython
Cloning into '/var/lib/mock/f40-build-2189992-51418/root/chroot_tmpdir/scmroot/rust-cpython'...
$ git fetch origin 3d489c030b8246b1c09734c5e7b797e935c5343f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cpython
 * [new ref]         3d489c030b8246b1c09734c5e7b797e935c5343f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d489c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild