$ git clone -n https://src.fedoraproject.org/rpms/rust-pcre2-sys.git /var/lib/mock/f39-build-1522232-35897/root/chroot_tmpdir/scmroot/rust-pcre2-sys
Cloning into '/var/lib/mock/f39-build-1522232-35897/root/chroot_tmpdir/scmroot/rust-pcre2-sys'...
$ git fetch origin f6e03c7096d3749ebaec6895e89f630766dbf2d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pcre2-sys
 * [new ref]         f6e03c7096d3749ebaec6895e89f630766dbf2d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6e03c7 Update to version 0.2.6; Fixes RHBZ#2215776