$ git clone -n https://src.fedoraproject.org/rpms/rust-libusb1-sys.git /var/lib/mock/f45-build-43007-799/root/chroot_tmpdir/scmroot/rust-libusb1-sys
Cloning into '/var/lib/mock/f45-build-43007-799/root/chroot_tmpdir/scmroot/rust-libusb1-sys'...
$ git fetch origin b6e7587ba84fa423a8f164e6b57111b4b2d26480:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libusb1-sys
 * [new ref]         b6e7587ba84fa423a8f164e6b57111b4b2d26480 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6e7587 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild