$ git clone -n https://src.fedoraproject.org/rpms/rust-salsa-macro-rules.git /var/lib/mock/f45-build-44674-816/root/chroot_tmpdir/scmroot/rust-salsa-macro-rules
Cloning into '/var/lib/mock/f45-build-44674-816/root/chroot_tmpdir/scmroot/rust-salsa-macro-rules'...
$ git fetch origin 146d63c65d2a266f2cd8277c1f704f461b3adaea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-salsa-macro-rules
 * [new ref]         146d63c65d2a266f2cd8277c1f704f461b3adaea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 146d63c Update to version 0.28.2; Fixes RHBZ#2499483