$ git clone -n https://src.fedoraproject.org/rpms/rust-tower-test.git /var/lib/mock/f39-build-1538518-36393/root/chroot_tmpdir/scmroot/rust-tower-test
Cloning into '/var/lib/mock/f39-build-1538518-36393/root/chroot_tmpdir/scmroot/rust-tower-test'...
$ git fetch origin 454cf1cb7692ecbaa58728b004f3015f478736a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tower-test
 * [new ref]         454cf1cb7692ecbaa58728b004f3015f478736a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 454cf1c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild