$ git clone -n https://src.fedoraproject.org/rpms/rust-derive_builder_core0.9.git /var/lib/mock/f39-build-1488852-34499/root/chroot_tmpdir/scmroot/rust-derive_builder_core0.9
Cloning into '/var/lib/mock/f39-build-1488852-34499/root/chroot_tmpdir/scmroot/rust-derive_builder_core0.9'...
$ git fetch origin 97d5bf874fefdbf10ceab202d841d665fc97036e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-derive_builder_core0.9
 * [new ref]         97d5bf874fefdbf10ceab202d841d665fc97036e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 97d5bf8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild