$ git clone -n https://src.fedoraproject.org/rpms/rust-uuid.git /var/lib/mock/f45-build-46015-830/root/chroot_tmpdir/scmroot/rust-uuid
Cloning into '/var/lib/mock/f45-build-46015-830/root/chroot_tmpdir/scmroot/rust-uuid'...
$ git fetch origin cce6f565f691192a941928580f31fd774003f4fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uuid
 * [new ref]         cce6f565f691192a941928580f31fd774003f4fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cce6f56 Update to version 1.26.0; Fixes RHBZ#2521295