$ git clone -n https://src.fedoraproject.org/rpms/rust-predicates-core.git /var/lib/mock/f38-build-side-43-rust-devel-1410508-31420/root/chroot_tmpdir/scmroot/rust-predicates-core
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410508-31420/root/chroot_tmpdir/scmroot/rust-predicates-core'...
$ git fetch origin fc99c41a027c035e699459e14839ba1c366f423f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-predicates-core
 * [new ref]         fc99c41a027c035e699459e14839ba1c366f423f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc99c41 Update to version 1.0.6; Fixes RHBZ#2178705