$ git clone -n https://src.fedoraproject.org/rpms/rust-sysinfo0.19.git /var/lib/mock/f41-build-1152506-21302/root/chroot_tmpdir/scmroot/rust-sysinfo0.19
Cloning into '/var/lib/mock/f41-build-1152506-21302/root/chroot_tmpdir/scmroot/rust-sysinfo0.19'...
$ git fetch origin da72f57f7468c13864bf15033587db1799361182:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sysinfo0.19
 * [new ref]         da72f57f7468c13864bf15033587db1799361182 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da72f57 compat package no longer needed