$ git clone -n https://src.fedoraproject.org/rpms/rust-data-encoding-macro-internal.git /var/lib/mock/f41-build-1197385-22342/root/chroot_tmpdir/scmroot/rust-data-encoding-macro-internal
Cloning into '/var/lib/mock/f41-build-1197385-22342/root/chroot_tmpdir/scmroot/rust-data-encoding-macro-internal'...
$ git fetch origin 3660aab4f13fe2428488c9a915c70b6a6be403c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-data-encoding-macro-internal
 * [new ref]         3660aab4f13fe2428488c9a915c70b6a6be403c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3660aab Update to version 0.1.13; Fixes RHBZ#2277589