$ git clone -n https://src.fedoraproject.org/rpms/rust-sysinfo.git /var/lib/mock/f45-build-45314-822/root/chroot_tmpdir/scmroot/rust-sysinfo
Cloning into '/var/lib/mock/f45-build-45314-822/root/chroot_tmpdir/scmroot/rust-sysinfo'...
$ git fetch origin bc65706d5cf65b38fa860ed3055fe6693baf8ddd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sysinfo
 * [new ref]         bc65706d5cf65b38fa860ed3055fe6693baf8ddd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc65706 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild