$ git clone -n https://src.fedoraproject.org/rpms/rust-hyper-tls.git /var/lib/mock/f45-build-42467-794/root/chroot_tmpdir/scmroot/rust-hyper-tls
Cloning into '/var/lib/mock/f45-build-42467-794/root/chroot_tmpdir/scmroot/rust-hyper-tls'...
$ git fetch origin 4b3e572b649474d90ed9ea3596d72bafaf19e6d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hyper-tls
 * [new ref]         4b3e572b649474d90ed9ea3596d72bafaf19e6d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b3e572 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild