$ git clone -n https://src.fedoraproject.org/rpms/rust-async-channel1.git /var/lib/mock/f45-build-40244-769/root/chroot_tmpdir/scmroot/rust-async-channel1
Cloning into '/var/lib/mock/f45-build-40244-769/root/chroot_tmpdir/scmroot/rust-async-channel1'...
$ git fetch origin a9119c18fe5b7d2720723a841854670b2723cf22:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async-channel1
 * [new ref]         a9119c18fe5b7d2720723a841854670b2723cf22 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9119c1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild