$ git clone -n https://src.fedoraproject.org/rpms/rust-socket2_0.4.git /var/lib/mock/f38-build-side-42-init-devel-1083475-29934/root/chroot_tmpdir/scmroot/rust-socket2_0.4
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1083475-29934/root/chroot_tmpdir/scmroot/rust-socket2_0.4'...
$ git fetch origin c72c972b34597ef96d2dc6fd0883ccf026c4f3bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-socket2_0.4
 * [new ref]         c72c972b34597ef96d2dc6fd0883ccf026c4f3bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c72c972 Initial import (socket2 0.4 compat package)