$ git clone -n https://src.fedoraproject.org/rpms/rust-mktemp.git /var/lib/mock/f45-build-43249-801/root/chroot_tmpdir/scmroot/rust-mktemp
Cloning into '/var/lib/mock/f45-build-43249-801/root/chroot_tmpdir/scmroot/rust-mktemp'...
$ git fetch origin 1c5c7504db45923ee0d4ecf970263c34ab8e1446:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-mktemp
 * [new ref]         1c5c7504db45923ee0d4ecf970263c34ab8e1446 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c5c750 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild