$ git clone -n https://src.fedoraproject.org/rpms/rust-deadpool.git /var/lib/mock/f45-build-41186-780/root/chroot_tmpdir/scmroot/rust-deadpool
Cloning into '/var/lib/mock/f45-build-41186-780/root/chroot_tmpdir/scmroot/rust-deadpool'...
$ git fetch origin 659a59b26b66b6e2c26020ee28843e92d21a2ecc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-deadpool
 * [new ref]         659a59b26b66b6e2c26020ee28843e92d21a2ecc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 659a59b Update to version 0.13.1; Fixes RHBZ#2524563