$ git clone -n https://src.fedoraproject.org/rpms/rust-num-integer.git /var/lib/mock/f45-build-43482-803/root/chroot_tmpdir/scmroot/rust-num-integer
Cloning into '/var/lib/mock/f45-build-43482-803/root/chroot_tmpdir/scmroot/rust-num-integer'...
$ git fetch origin 6e120facca8ad06e88ab7dc06c1d2d6cbb019e52:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-num-integer
 * [new ref]         6e120facca8ad06e88ab7dc06c1d2d6cbb019e52 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e120fa Update to version 0.1.47; Fixes RHBZ#2514459