$ git clone -n https://src.fedoraproject.org/rpms/rust-hkdf.git /var/lib/mock/f40-build-2641678-66432/root/chroot_tmpdir/scmroot/rust-hkdf
Cloning into '/var/lib/mock/f40-build-2641678-66432/root/chroot_tmpdir/scmroot/rust-hkdf'...
$ git fetch origin 2aa53338b27b963649919f7b61d63622bd8e99c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hkdf
 * [new ref]         2aa53338b27b963649919f7b61d63622bd8e99c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2aa5333 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild