$ git clone -n https://src.fedoraproject.org/rpms/rust-os_display.git /var/lib/mock/f45-build-43592-804/root/chroot_tmpdir/scmroot/rust-os_display
Cloning into '/var/lib/mock/f45-build-43592-804/root/chroot_tmpdir/scmroot/rust-os_display'...
$ git fetch origin c7eb5ee2c2e7e4550a4c131a0d62881ea04b5098:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-os_display
 * [new ref]         c7eb5ee2c2e7e4550a4c131a0d62881ea04b5098 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7eb5ee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild