$ git clone -n https://src.fedoraproject.org/rpms/rust-nucleo-matcher.git /var/lib/mock/f45-build-43468-803/root/chroot_tmpdir/scmroot/rust-nucleo-matcher
Cloning into '/var/lib/mock/f45-build-43468-803/root/chroot_tmpdir/scmroot/rust-nucleo-matcher'...
$ git fetch origin 38434043e3dc049646f94294d382a85a538db096:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nucleo-matcher
 * [new ref]         38434043e3dc049646f94294d382a85a538db096 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3843404 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild