$ git clone -n https://src.fedoraproject.org/rpms/rust-vsort.git /var/lib/mock/f45-build-46102-830/root/chroot_tmpdir/scmroot/rust-vsort
Cloning into '/var/lib/mock/f45-build-46102-830/root/chroot_tmpdir/scmroot/rust-vsort'...
$ git fetch origin 92750abcfd89d6db8c622ee5196e9c817fe4e3e7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-vsort
 * [new ref]         92750abcfd89d6db8c622ee5196e9c817fe4e3e7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92750ab Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild