$ git clone -n https://src.fedoraproject.org/rpms/rust-diskonaut.git /var/lib/mock/f40-build-2150066-50894/root/chroot_tmpdir/scmroot/rust-diskonaut
Cloning into '/var/lib/mock/f40-build-2150066-50894/root/chroot_tmpdir/scmroot/rust-diskonaut'...
$ git fetch origin f6154a3b85b698c1c6bffd1e659bbec7f4746600:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-diskonaut
 * [new ref]         f6154a3b85b698c1c6bffd1e659bbec7f4746600 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6154a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild