$ git clone -n https://src.fedoraproject.org/rpms/rust-ntest.git /var/lib/mock/f45-build-43442-803/root/chroot_tmpdir/scmroot/rust-ntest
Cloning into '/var/lib/mock/f45-build-43442-803/root/chroot_tmpdir/scmroot/rust-ntest'...
$ git fetch origin 633bd8e2df2a03ba41d62fa95f0bed2e12627a96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ntest
 * [new ref]         633bd8e2df2a03ba41d62fa95f0bed2e12627a96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 633bd8e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild