$ git clone -n https://src.fedoraproject.org/rpms/rust-schemars_derive0.8.git /var/lib/mock/f45-build-44693-816/root/chroot_tmpdir/scmroot/rust-schemars_derive0.8
Cloning into '/var/lib/mock/f45-build-44693-816/root/chroot_tmpdir/scmroot/rust-schemars_derive0.8'...
$ git fetch origin adc4392b2b1a4232761aa5eb5c4e6d320a02e9f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-schemars_derive0.8
 * [new ref]         adc4392b2b1a4232761aa5eb5c4e6d320a02e9f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at adc4392 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild