$ git clone -n https://src.fedoraproject.org/rpms/rust-unic-segment.git /var/lib/mock/f45-build-45877-828/root/chroot_tmpdir/scmroot/rust-unic-segment
Cloning into '/var/lib/mock/f45-build-45877-828/root/chroot_tmpdir/scmroot/rust-unic-segment'...
$ git fetch origin ebd0bb77009459462ffe8b83ab45fb4556ec0a32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unic-segment
 * [new ref]         ebd0bb77009459462ffe8b83ab45fb4556ec0a32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebd0bb7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild