$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-validate.git /var/lib/mock/f40-build-2100653-50478/root/chroot_tmpdir/scmroot/rust-gix-validate
Cloning into '/var/lib/mock/f40-build-2100653-50478/root/chroot_tmpdir/scmroot/rust-gix-validate'...
$ git fetch origin ca6d159025e149e823758e61aee4e52eb5dc732f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-validate
 * [new ref]         ca6d159025e149e823758e61aee4e52eb5dc732f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca6d159 Update to version 0.8.0 (rhbz#2229633)