$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_mktemp.git /var/lib/mock/f45-build-45994-830/root/chroot_tmpdir/scmroot/rust-uu_mktemp
Cloning into '/var/lib/mock/f45-build-45994-830/root/chroot_tmpdir/scmroot/rust-uu_mktemp'...
$ git fetch origin 810be0447ea65ac7b529a2a0e3a6b99d72fd002f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_mktemp
 * [new ref]         810be0447ea65ac7b529a2a0e3a6b99d72fd002f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 810be04 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild