$ git clone -n https://src.fedoraproject.org/rpms/rust-iai.git /var/lib/mock/f38-build-side-43-rust-devel-1415201-31454/root/chroot_tmpdir/scmroot/rust-iai
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1415201-31454/root/chroot_tmpdir/scmroot/rust-iai'...
$ git fetch origin 6c4c46cdd0a58a36d946874494aa684b3c8ef0d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-iai
 * [new ref]         6c4c46cdd0a58a36d946874494aa684b3c8ef0d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c4c46c Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild